From 065ba5f27c7c4003ec56b00792a1d71e1b641354 Mon Sep 17 00:00:00 2001
From: Martin Goik <goik@hdm-stuttgart.de>
Date: Sat, 12 Mar 2016 09:43:50 +0100
Subject: [PATCH] http --> https

---
 Doc/Common/bibliography.xml         |   4 +-
 Doc/Common/glossary.xml             |  46 ++++----
 Doc/Common/outdatedBibliography.xml |   2 +-
 Doc/Sd1/appendix.xml                |  10 +-
 Doc/Sd1/arrays.xml                  |  14 +--
 Doc/Sd1/collections.xml             | 128 ++++++++++-----------
 Doc/Sd1/coreClasses.xml             |  54 ++++-----
 Doc/Sd1/deployment.xml              |  10 +-
 Doc/Sd1/gettingStarted.xml          |  22 ++--
 Doc/Sd1/languageFundamentals.xml    |  34 +++---
 Doc/Sd1/objectsClasses.xml          |  38 +++---
 Doc/Sd1/statements.xml              |  10 +-
 Doc/Sd1/streams.xml                 |  28 ++---
 Doc/Sda1/dom.xml                    | 136 +++++++++++-----------
 Doc/Sda1/fo.xml                     | 154 ++++++++++++-------------
 Doc/Sda1/jdbc.xml                   | 142 +++++++++++------------
 Doc/Sda1/jpaintro.xml               |   4 +-
 Doc/Sda1/prerequisites.xml          |  38 +++---
 Doc/Sda1/sax.xml                    |  36 +++---
 Doc/Sda1/schema.xml                 |  64 +++++------
 Doc/Sda1/vaadin.xml                 |   8 +-
 Doc/Sda1/xmlintro.xml               |  26 ++---
 Doc/Sda1/xmlschema.xml              |  62 +++++-----
 Doc/Sda1/xslt.xml                   | 172 ++++++++++++++--------------
 Doc/Sda2/jpa.xml                    |  48 ++++----
 Doc/Sda2/ldap.xml                   |  20 ++--
 Doc/Sdi/apache.xml                  |  10 +-
 Doc/Sdi/ldap.xml                    |  16 +--
 Doc/Sdi/unixIntro.xml               |   2 +-
 29 files changed, 669 insertions(+), 669 deletions(-)

diff --git a/Doc/Common/bibliography.xml b/Doc/Common/bibliography.xml
index 3bd50bc45..53d9214e2 100644
--- a/Doc/Common/bibliography.xml
+++ b/Doc/Common/bibliography.xml
@@ -156,7 +156,7 @@
     <title>Harnessing Hibernate</title>
   </biblioentry>
 
-  <biblioentry xlink:href="http://proquest.safaribooksonline.com/book/web-development/xml/9781118239483"
+  <biblioentry xlink:href="https://proquest.safaribooksonline.com/book/web-development/xml/9781118239483"
                xml:id="bib_fawcett2012">
     <abbrev>Fawcett2012</abbrev>
 
@@ -431,7 +431,7 @@
     <title>Java ist auch eine Insel</title>
   </biblioentry>
 
-  <biblioentry xlink:href="http://proquest.safaribooksonline.com/book/web-development/xml/9780132886741"
+  <biblioentry xlink:href="https://proquest.safaribooksonline.com/book/web-development/xml/9780132886741"
                xml:id="bib_Walmsley02">
     <abbrev>Walmsley2002</abbrev>
 
diff --git a/Doc/Common/glossary.xml b/Doc/Common/glossary.xml
index ec366f1a1..529a8b99b 100644
--- a/Doc/Common/glossary.xml
+++ b/Doc/Common/glossary.xml
@@ -49,7 +49,7 @@
       <glossterm><acronym>CSS</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/Style/CSS">Cascading Style
+        <para><link xlink:href="https://www.w3.org/Style/CSS">Cascading Style
         Sheets</link></para>
       </glossdef>
     </glossentry>
@@ -78,7 +78,7 @@
       <glossterm><acronym>DOM</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/DOM">Document Object
+        <para><link xlink:href="https://www.w3.org/DOM">Document Object
         Model</link></para>
       </glossdef>
     </glossentry>
@@ -128,7 +128,7 @@
 
       <glossdef>
         <para><link
-        xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">Formatting
+        xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">Formatting
         Objects</link></para>
       </glossdef>
     </glossentry>
@@ -147,7 +147,7 @@
 
           <listitem>
             <para><link
-            xlink:href="http://www.eclipse.org/eclipselink">Eclipse
+            xlink:href="https://www.eclipse.org/eclipselink">Eclipse
             link</link></para>
           </listitem>
         </itemizedlist>
@@ -168,7 +168,7 @@
       <glossterm><orgname>HdM</orgname></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.hdm-stuttgart.de"
+        <para><link xlink:href="https://www.hdm-stuttgart.de"
         xml:lang="de">Hochschule der Medien</link></para>
       </glossdef>
     </glossentry>
@@ -178,7 +178,7 @@
 
       <glossdef>
         <para><link
-        xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">Hibernate
+        xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">Hibernate
         Query Language</link></para>
       </glossdef>
     </glossentry>
@@ -187,7 +187,7 @@
       <glossterm><acronym>HTML</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/TR/html5">Hypertext Markup
+        <para><link xlink:href="https://www.w3.org/TR/html5">Hypertext Markup
         Language, version 5</link></para>
       </glossdef>
     </glossentry>
@@ -196,7 +196,7 @@
       <glossterm><acronym>HTTP</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/Protocols">HyperText
+        <para><link xlink:href="https://www.w3.org/Protocols">HyperText
         Transfer Protocol</link></para>
       </glossdef>
     </glossentry>
@@ -242,7 +242,7 @@
 
             <glossdef>
               <para
-              xlink:href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.2.1">Integral
+              xlink:href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.2.1">Integral
               Types and Values</para>
             </glossdef>
           </glossentry>
@@ -416,7 +416,7 @@
       <glossterm><productname>Maven</productname></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://maven.apache.org">Software project
+        <para><link xlink:href="https://maven.apache.org">Software project
         management and comprehension tool</link></para>
       </glossdef>
     </glossentry>
@@ -425,7 +425,7 @@
       <glossterm><orgname>MIB</orgname></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.mi.hdm-stuttgart.de"
+        <para><link xlink:href="https://www.mi.hdm-stuttgart.de"
         xml:lang="de">Medieninformatik (Bachelor)</link></para>
       </glossdef>
     </glossentry>
@@ -455,7 +455,7 @@
       <glossterm><acronym>PHP</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.php.net">Hypertext
+        <para><link xlink:href="https://secure.php.net">Hypertext
         Preprocessor</link></para>
       </glossdef>
     </glossentry>
@@ -473,7 +473,7 @@
       <glossterm>pom.xml</glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://maven.apache.org">project object
+        <para><link xlink:href="https://maven.apache.org">project object
         model</link> file describing a <link linkend="glo_Maven">Maven</link>
         project or module</para>
       </glossdef>
@@ -512,7 +512,7 @@
 
       <glossdef>
         <para><link
-        xlink:href="http://en.wikipedia.org/wiki/Server_Message_Block">Server
+        xlink:href="https://en.wikipedia.org/wiki/Server_Message_Block">Server
         Message Block</link></para>
       </glossdef>
     </glossentry>
@@ -528,7 +528,7 @@
 
             <glossdef>
               <para><link
-              xlink:href="http://directory.apache.org/studio">Apache Directory
+              xlink:href="https://directory.apache.org/studio">Apache Directory
               Studio</link></para>
             </glossdef>
           </glossentry>
@@ -547,7 +547,7 @@
 
             <glossdef>
               <para>Java <link linkend="glo_IDE">IDE</link> available from
-              <link xlink:href="http://eclipse.org">eclipse.org</link>.</para>
+              <link xlink:href="https://eclipse.org">eclipse.org</link>.</para>
             </glossdef>
           </glossentry>
 
@@ -555,7 +555,7 @@
             <glossterm><productname>Git</productname></glossterm>
 
             <glossdef>
-              <para><link xlink:href="http://git-scm.com">The Git version
+              <para><link xlink:href="https://git-scm.com">The Git version
               control system</link></para>
             </glossdef>
           </glossentry>
@@ -565,7 +565,7 @@
 
             <glossdef>
               <para><link
-              xlink:href="http://www.mysql.com/about/legal/trademark.html">The
+              xlink:href="https://www.mysql.com/about/legal/trademark.html">The
               <acronym>Mysql</acronym> database server product</link></para>
             </glossdef>
           </glossentry>
@@ -671,7 +671,7 @@
       <glossterm><acronym>URL</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.ietf.org/rfc/rfc1738.txt">Uniform
+        <para><link xlink:href="https://www.ietf.org/rfc/rfc1738.txt">Uniform
         resource locator</link></para>
       </glossdef>
     </glossentry>
@@ -718,7 +718,7 @@
       <glossterm><acronym>XML</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/XML">Extended Markup
+        <para><link xlink:href="https://www.w3.org/XML">Extended Markup
         Language</link></para>
       </glossdef>
     </glossentry>
@@ -727,7 +727,7 @@
       <glossterm><acronym>XPath</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/TR/xpath">XML Path
+        <para><link xlink:href="https://www.w3.org/TR/xpath">XML Path
         Language</link></para>
       </glossdef>
     </glossentry>
@@ -736,7 +736,7 @@
       <glossterm><acronym>XSD</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/XML/Schema">XML Schema
+        <para><link xlink:href="https://www.w3.org/XML/Schema">XML Schema
         Definition</link></para>
       </glossdef>
     </glossentry>
@@ -745,7 +745,7 @@
       <glossterm><acronym>XSL</acronym></glossterm>
 
       <glossdef>
-        <para><link xlink:href="http://www.w3.org/Style/XSL">Extended
+        <para><link xlink:href="https://www.w3.org/Style/XSL">Extended
         Stylesheet Language</link></para>
       </glossdef>
     </glossentry>
diff --git a/Doc/Common/outdatedBibliography.xml b/Doc/Common/outdatedBibliography.xml
index 9674584af..b34dcfc11 100644
--- a/Doc/Common/outdatedBibliography.xml
+++ b/Doc/Common/outdatedBibliography.xml
@@ -63,7 +63,7 @@
     </publisher>
 
     <title xlink:href="http://www.greenfoot.org/book"><productname
-    xlink:href="http://www.pearson-studium.de/386894902X.html">Einführung in
+    xlink:href="https://www.pearson-studium.de/386894902X.html">Einführung in
     Java mit Greenfoot</productname></title>
   </biblioentry>
 </bibliography>
diff --git a/Doc/Sd1/appendix.xml b/Doc/Sd1/appendix.xml
index f90c25e40..4df9e1527 100644
--- a/Doc/Sd1/appendix.xml
+++ b/Doc/Sd1/appendix.xml
@@ -54,7 +54,7 @@
 
         <glossdef>
           <para><link
-          xlink:href="http://chortle.ccsu.edu/java5/index.html">Original
+          xlink:href="https://chortle.ccsu.edu/java5/index.html">Original
           English version</link> and <link
           xlink:href="http://www.gailer-net.de/tutorials/java/java-toc.html">German
           translation</link>.</para>
@@ -74,11 +74,11 @@
 
       <glossentry>
         <glossterm><uri
-        xlink:href="http://rosettacode.org">rosettacode.org</uri></glossterm>
+        xlink:href="https://rosettacode.org">rosettacode.org</uri></glossterm>
 
         <glossdef>
           <para><link
-          xlink:href="http://rosettacode.org/wiki/Category:Programming_Tasks">Programming
+          xlink:href="https://rosettacode.org/wiki/Category:Programming_Tasks">Programming
           tasks</link> (including solutions for multiple languages).</para>
         </glossdef>
       </glossentry>
@@ -88,7 +88,7 @@
 
         <glossdef>
           <para><link
-          xlink:href="http://www.reddit.com/r/dailyprogrammer">Daily
+          xlink:href="https://www.reddit.com/r/dailyprogrammer">Daily
           Programmer</link>.</para>
         </glossdef>
       </glossentry>
@@ -130,7 +130,7 @@
 
         <glossdef>
           <para>Take the <link
-          xlink:href="http://www.home.hs-karlsruhe.de/~pach0003/informatik_1/aufgaben/en/java.html">easier
+          xlink:href="https://www.home.hs-karlsruhe.de/~pach0003/informatik_1/aufgaben/en/java.html">easier
           exercises</link>.</para>
         </glossdef>
       </glossentry>
diff --git a/Doc/Sd1/arrays.xml b/Doc/Sd1/arrays.xml
index 023a7443e..c330903fc 100644
--- a/Doc/Sd1/arrays.xml
+++ b/Doc/Sd1/arrays.xml
@@ -1307,7 +1307,7 @@ public class Driver {
               the <xref linkend="glo_Junit"/> method <methodname
               xlink:href="http://junit.sourceforge.net/javadoc/org/junit/Assert.html#assertEquals(double,%20double)">assertEquals()</methodname>to
               be marked as <link
-              xlink:href="http://docs.oracle.com/javase/1.5.0/docs/guide/javadoc/deprecation/deprecation.html">deprecated</link>.
+              xlink:href="https://docs.oracle.com/javase/1.5.0/docs/guide/javadoc/deprecation/deprecation.html">deprecated</link>.
               Give a reason why this decision has been taken. The answer may
               guide you in finding a more appropriate test.</para>
             </caution>
@@ -1454,9 +1454,9 @@ public void testApp() {
                   to an arbitrary limit (say limit == 10000) and returns the
                   number of primes within [2, limit]. Measure this method's
                   execution time. You may want to consult <methodname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#currentTimeMillis--">System.currentTimeMillis()</methodname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#currentTimeMillis--">System.currentTimeMillis()</methodname>
                   or <methodname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#nanoTime--">System.nanoTime()</methodname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#nanoTime--">System.nanoTime()</methodname>
                   for that purpose.</para>
                 </listitem>
               </orderedlist>
@@ -1576,7 +1576,7 @@ public void testApp() {
 143 % 11 == 0 ? Yes ==&gt; 143 is not prime</programlisting>
 
               <para>Learning from <link
-              xlink:href="http://en.wikipedia.org/wiki/Prime_factor">prime
+              xlink:href="https://en.wikipedia.org/wiki/Prime_factor">prime
               factorization</link> it actually suffices testing only prime
               values rather than all integer values up to the already
               discussed square root limit:</para>
@@ -1640,7 +1640,7 @@ public void testApp() {
     <title>The median of a given sample.</title>
 
     <para>Read the <link
-    xlink:href="http://en.wikipedia.org/wiki/Median">definition of a given
+    xlink:href="https://en.wikipedia.org/wiki/Median">definition of a given
     sample's median</link>.</para>
 
     <qandaset defaultlabel="qanda" xml:id="sd1QandaMedian">
@@ -1687,7 +1687,7 @@ public void testApp() {
                   <para>You may either construct a suitable copy containing
                   the current elements yourself or get enlightened by reading
                   the <xref linkend="glo_API"/> documentation of <link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#copyOfRange-int:A-int-int-">copyOfRange(...)</link>.</para>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#copyOfRange-int:A-int-int-">copyOfRange(...)</link>.</para>
                 </caution>
               </listitem>
 
@@ -1851,7 +1851,7 @@ Your sample's median is: 1.0</programlisting>
             <orderedlist>
               <listitem>
                 <para>The <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#copyOfRange-int:A-int-int-">copyOfRange(...)</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#copyOfRange-int:A-int-int-">copyOfRange(...)</link>
                 method in <methodname
                 xlink:href="Ref/api/P/Array/integerStoreMedianAnswer/de/hdm_stuttgart/mi/sd1/store/IntegerStore.html#getValues--">getValues()</methodname>
                 returns that portion of our <code>int[] values</code> array
diff --git a/Doc/Sd1/collections.xml b/Doc/Sd1/collections.xml
index b22403336..dc9b09f0b 100644
--- a/Doc/Sd1/collections.xml
+++ b/Doc/Sd1/collections.xml
@@ -85,18 +85,18 @@
 
     <section xml:id="sd1Collection2exerciseSetString">
       <title>A <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
       of Strings</title>
 
       <qandaset defaultlabel="qanda" xml:id="sd1QandaSetString">
         <title>Inserting strings into a <classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>.</title>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>.</title>
 
         <qandadiv>
           <qandaentry>
             <question>
               <para>Create a <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
               of String instances including duplicates. Iterate over this set
               and write each value to <code>System.out</code>:</para>
 
@@ -147,18 +147,18 @@ Eve</programlisting>
 
     <section xml:id="sd1CollectionExerciseListString">
       <title>A <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>
       of Strings</title>
 
       <qandaset defaultlabel="qanda" xml:id="sd1QandaListString">
         <title>Inserting strings into a <classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>.</title>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>.</title>
 
         <qandadiv>
           <qandaentry>
             <question>
               <para>Create a <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>
               of String instances including duplicates. Iterate over this list
               and write each value to <code>System.out</code>:</para>
 
@@ -230,9 +230,9 @@ Jim</programlisting>
 
               <para>Provide an appropriate constructor and override both
               <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--">toString()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--">toString()</methodname>
               and <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
               to allow execution of:</para>
 
               <programlisting language="java">    // Defining and testing integer coordinates
@@ -260,9 +260,9 @@ c12.equals("dummy"):false
 
             <answer>
               <para>Overriding <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--">toString()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--">toString()</methodname>
               and <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
               and adding a non-default constructor is a straightforward
               exercise:</para>
 
@@ -303,20 +303,20 @@ c12.equals("dummy"):false
 
     <section xml:id="sd1SetCoordinate">
       <title>A <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
       of Coordinate instances</title>
 
       <qandaset defaultlabel="qanda" xml:id="sd1QandaSetCoordinate">
         <title>Inserting <link
         linkend="sd1CollectionDefCoordinate"><classname>Coordinate</classname></link>
         instances into a <classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>.</title>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>.</title>
 
         <qandadiv>
           <qandaentry>
             <question>
               <para>Create a <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
               of <link
               linkend="sd1CollectionDefCoordinate"><classname>Coordinate</classname></link>
               instances including duplicates. Iterate over this set and write
@@ -357,9 +357,9 @@ c12.equals("dummy"):false
 (1|2)</programlisting>
 
               <para>This is due to our own fault not providing a <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
               implementation being compatible to our overridden <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
               method. Consider:</para>
 
               <programlisting language="java">    final Coordinate 
@@ -379,21 +379,21 @@ c12.equals("dummy"):false
               xlink:href="http://tutorials.jenkov.com/java-collections/hashcode-equals.html">Java
               Collections - hashCode() and equals()</link>. The values
               actually stem from <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
               being defined in our superclass <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html">Object</classname>.</para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html">Object</classname>.</para>
 
               <para>The former exercise <xref linkend="sd1QandaSetString"/>
               involved instances of class String having well defined
               <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#equals-java.lang.Object-">equals()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#equals-java.lang.Object-">equals()</methodname>
               and <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#hashCode--">hashCode()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#hashCode--">hashCode()</methodname>
               implementations. To resolve this issue we thus have to override
               not just <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals()</methodname>
               but <methodname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashCode()</methodname>
               as well:</para>
 
               <programlisting language="java">public class Coordinate {
@@ -430,7 +430,7 @@ c12.equals("dummy"):false
 
     <section xml:id="sd1CollectionExerciseWordSearch">
       <title>Getting a <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
       of strings from a text file</title>
 
       <qandaset defaultlabel="qanda" xml:id="sd1QandaWordSearch">
@@ -499,7 +499,7 @@ c12.equals("dummy"):false
                   <emphasis role="bold"><code>.,:;?!"</code></emphasis> or
                   white space characters may be achieved by means of
                   <methodname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-">split(...)</methodname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-">split(...)</methodname>
                   and the regular expression <code>String regex = "[
                   \t\"!?.,'´`:;]+"</code>;. This <quote>+</quote> sign
                   indicates the appearance of a succession of one ore more
@@ -564,9 +564,9 @@ c12.equals("dummy"):false
             <answer>
               <para>The desired result is easy to achieve by exchanging our
               <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>
               by a <classname
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/SortedSet.html">SortedSet</classname>:</para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedSet.html">SortedSet</classname>:</para>
 
               <programlisting language="java">  /**
    * The set of words found so far.
@@ -618,15 +618,15 @@ printer</programlisting>
               <orderedlist>
                 <listitem>
                   <para><link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#sort-java.util.List-java.util.Comparator-">Collections.sort(</link>List&lt;String&gt;,
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#sort-java.util.List-java.util.Comparator-">Collections.sort(</link>List&lt;String&gt;,
                   <classname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
                   c) is your friend.</para>
                 </listitem>
 
                 <listitem>
                   <para>Defining a <classname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
                   class acting on strings works like:</para>
 
                   <programlisting language="java">/**
@@ -708,7 +708,7 @@ You found Pascal!"</programlisting>
                   <listitem>
                     <para>Define a class <classname>WordFrequency</classname>
                     containing a <classname
-                    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
                     attribute among with an integer number representing its
                     frequency of appearance:</para>
 
@@ -735,9 +735,9 @@ public class WordFrequency {
                     any frequency value.</para>
 
                     <para>Override <methodname
-                    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals(...)</methodname>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-">equals(...)</methodname>
                     and <methodname
-                    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashValue()</methodname>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">hashValue()</methodname>
                     accordingly.</para>
                   </listitem>
 
@@ -790,9 +790,9 @@ public class WordFrequency {
                         <para>After processing the input text file sort your
                         <code>List&lt;WordFrequency&gt;</code> by a suitable
                         <classname
-                        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator&lt;WordFrequency&gt;</classname>
+                        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator&lt;WordFrequency&gt;</classname>
                         instance by means of <methodname
-                        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#sort-java.util.List-java.util.Comparator-">Collections.sort(...)</methodname>.</para>
+                        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#sort-java.util.List-java.util.Comparator-">Collections.sort(...)</methodname>.</para>
                       </listitem>
                     </orderedlist>
                   </listitem>
@@ -966,7 +966,7 @@ End of records</programlisting>
                 actually initialize the desired address fields
                 <code>firstName</code>, <code>lastName</code>, ...,
                 <code>web</code>. Hint: You may use the <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-">split(...)</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-">split(...)</link>
                 method:</para>
 
                 <programlisting language="java">... = s.split("\",\"");</programlisting>
@@ -1057,7 +1057,7 @@ End of records</programlisting>
                       <para>This requires textually replacing special
                       characters by the above entities e.g. by means of
                       <classname>String</classname>.<methodname
-                      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#replace-java.lang.CharSequence-java.lang.CharSequence-">replace(...)</methodname>.</para>
+                      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#replace-java.lang.CharSequence-java.lang.CharSequence-">replace(...)</methodname>.</para>
                     </glossdef>
                   </glossentry>
                 </glosslist>
@@ -1110,11 +1110,11 @@ End of records</programlisting>
               <listitem>
                 <para>You may direct your generated HTML output to a file
                 rather than to the standard output <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#out">System.out</link>.
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#out">System.out</link>.
                 This can be achieved by opening an output <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html">PrintStream</classname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html">PrintStream</classname>
                 related to a file by means of the <methodname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html#PrintStream-java.lang.String-">PrintStream</methodname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html#PrintStream-java.lang.String-">PrintStream</methodname>
                 output filename constructor. Your resulting output may
                 transform the file <filename>addresses.txt</filename> into
                 <filename>addresses.txt.xhtml</filename>. The latter should be
@@ -1152,7 +1152,7 @@ End of records</programlisting>
           <question>
             <para>We want to partly implement a simplified version of
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>:</para>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html">Set</classname>:</para>
 
             <programlisting language="java">package de.hdm_stuttgart.mi.sd1.stringset;
 
@@ -1288,7 +1288,7 @@ public interface Set_String {
               <listitem>
                 <para>On lookup use hash code values prior to comparing via
                 <methodname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#equals-java.lang.Object-">equals()</methodname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#equals-java.lang.Object-">equals()</methodname>
                 in order to gain performance.</para>
               </listitem>
             </orderedlist>
@@ -1375,28 +1375,28 @@ public interface Set_String {
 
     <para>A cleaner solution might conceive the above result output as a
     <classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
     <classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;.
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;.
     The set of words appearing in a text will be regarded as keys. The
     frequencies of appearance are corresponding values:</para>
 
     <informaltable border="1" width="40%">
       <tr>
         <th colspan="2"><classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
         <classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;</th>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;</th>
       </tr>
 
       <tr>
         <th>Word (<classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>)</th>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>)</th>
 
         <th>Frequency (<classname
-        xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>)</th>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>)</th>
       </tr>
 
       <tr>
@@ -1432,10 +1432,10 @@ public interface Set_String {
 
     <qandaset defaultlabel="qanda" xml:id="sde1QandaWordFreqMap">
       <title>Implementing word frequencies by <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
       <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;
       instances.</title>
 
       <qandadiv>
@@ -1445,10 +1445,10 @@ public interface Set_String {
             replacing your <classname
             xlink:href="Ref/api/P/WordFrequency1/Solution/de/hdm_stuttgart/mi/sd1/textstat/WordFrequency.html">WordFrequency</classname>
             object by an instance of <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;.
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;.
             For the time being consider the output sorting order yet as
             irrelevant.</para>
           </question>
@@ -1465,7 +1465,7 @@ public interface Set_String {
     <para>The subsequent exercise is considered to be optional with respect to
     the final course's examination. It does however provide some deeper
     insight into the subject of <classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>
     instances.</para>
 
     <qandaset defaultlabel="qanda" xml:id="sde1QandaWordFreqMapSortOrder">
@@ -1479,22 +1479,22 @@ public interface Set_String {
             in <xref linkend="sd1CollectionWordFrequencies"/>.</para>
 
             <para>Hint: Following the discussion in <quote
-            xlink:href="http://stackoverflow.com/questions/11647889/sorting-the-mapkey-value-in-descending-order-based-on-the-value">Sorting
+            xlink:href="https://stackoverflow.com/questions/11647889/sorting-the-mapkey-value-in-descending-order-based-on-the-value">Sorting
             the Map&lt;Key,Value&gt; in descending order based on the
             value</quote> you may create a <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>&lt;<classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html">Entry</classname>(&lt;<classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html">List</classname>&lt;<classname
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html">Entry</classname>(&lt;<classname
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;&gt;
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;&gt;
             from your <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html">Map</classname>&lt;<classname
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>,
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html">Integer</classname>&gt;
             instance on demand (i.e. when sorting). Then define an appropriate
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html">Comparator</classname>
             class to get this list sorted.</para>
           </question>
 
diff --git a/Doc/Sd1/coreClasses.xml b/Doc/Sd1/coreClasses.xml
index beedbba69..93e59c674 100644
--- a/Doc/Sd1/coreClasses.xml
+++ b/Doc/Sd1/coreClasses.xml
@@ -67,7 +67,7 @@
                 strings</link> inside the first argument. It uses the
                 <acronym>varargs</acronym> mechanism being described in the
                 <link
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc2_html_5#toc2">Java
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc2_html_5#toc2">Java
                 classes section of chapter 4</link>.</para>
               </listitem>
 
@@ -118,16 +118,16 @@ java.util.IllegalFormatConversionException: <emphasis role="bold">d != java.lang
 
   <section xml:id="sw1SectionCoreClassesUsingMath">
     <title>Using class <classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname></title>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname></title>
 
     <para><classname
-    xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname>
     is yet another class belonging to the core set of the <xref
     linkend="glo_Java"/> programing language.</para>
 
     <qandaset defaultlabel="qanda" xml:id="sw1QandaSquareAreaMathPackage">
       <title>Using constants from <classname
-      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</classname>.</title>
+      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</classname>.</title>
 
       <qandadiv>
         <qandaentry>
@@ -154,15 +154,15 @@ java.util.IllegalFormatConversionException: <emphasis role="bold">d != java.lang
                 </m:math>
               </inlineequation> yourself. Actually <xref linkend="glo_Java"/>
             predefines constants in <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</classname>
             class. Read its documentation to rewrite your code thereby
             replacing your own variable <code>pi</code>'s definition .</para>
 
             <tip>
               <para>You may want to read the <quote
-              xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc11_html_2">Static
+              xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc11_html_2">Static
               Members</quote> and <quote
-              xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc6_html_4">Java
+              xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc6_html_4">Java
               Packages</quote> sections .</para>
             </tip>
           </question>
@@ -179,11 +179,11 @@ java.util.IllegalFormatConversionException: <emphasis role="bold">d != java.lang
 }</programlisting>
 
             <para>In case you bother about using the somewhat clumsy <varname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">Math.PI</varname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">Math.PI</varname>
             expression rather than just using <varname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">PI</varname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">PI</varname>
             itself some syntactic sugar is on offer by means of a <link
-            xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc13_html">static
+            xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc13_html">static
             import</link> statement:</para>
 
             <programlisting language="java" linenumbering="unnumbered"><emphasis
@@ -226,11 +226,11 @@ public final class Math {
 ...</programlisting>
 
             <para>This accounts for using the expression <code><varname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#field.summary">Math.PI</varname></code>.</para>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#field.summary">Math.PI</varname></code>.</para>
 
             <para>The careful reader may have expected an <code>import</code>
             statement in order to use the <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">Math</classname>
             class:</para>
 
             <programlisting language="java">import java.lang.<emphasis
@@ -344,7 +344,7 @@ public class CircleAreaCalculator {
 
                 <listitem>
                   <para>The <classname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
                   class does contain a method to retrieve a substring starting
                   and ending at given index positions. Read its documentation
                   to find it.</para>
@@ -352,9 +352,9 @@ public class CircleAreaCalculator {
 
                 <listitem>
                   <para>The <classname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
                   class does contain a method returning the <code
-                  xlink:href="http://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">char</code>
+                  xlink:href="https://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">char</code>
                   value at a given index. Read the documentation to find
                   it.</para>
                 </listitem>
@@ -370,9 +370,9 @@ public class CircleAreaCalculator {
             <para>We present a step by step solution. We start by coding a
             loop creating the set of all substrings of length 13. Reading the
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
             documentation the method<methodname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#substring-int-int-">
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#substring-int-int-">
             substring(...)</methodname> allows for accessing the set of all
             substrings of 13 adjacent digits:</para>
 
@@ -418,7 +418,7 @@ public class CircleAreaCalculator {
 0420752963450</programlisting>
 
             <para>The method <methodname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#charAt-int-">charAt(int
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#charAt-int-">charAt(int
             index)</methodname> allows us to access each character within our
             string individually. We need to write a method which converts a
             digit like '4' to the value 4. Remember: The Unicode value of e.g.
@@ -464,11 +464,11 @@ public class CircleAreaCalculator {
             actually 2,700,507,600. This exceeds <code
             xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#MAX_VALUE">MAX_VALUE</code>
             of 2,147,483,647 <link
-            xlink:href="http://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">being
+            xlink:href="https://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">being
             representable by a 4 byte <code>int</code> variable</link>.</para>
 
             <para>Luckily a <code>long</code> variable <link
-            xlink:href="http://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">will
+            xlink:href="https://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc3_html_3">will
             be able to hold positive values up to
             9,223,372,036,854,775,807</link>. This is much larger than our
             <quote>worst case</quote> 9 × 9 × 9 × 9 × 9 × 9 × 9 × 9 × 9 × 9 ×
@@ -573,9 +573,9 @@ public class CircleAreaCalculator {
 
                 <listitem>
                   <para>Read the documentation of <link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#identityHashCode-java.lang.Object-">System.identityHashCode(Object
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#identityHashCode-java.lang.Object-">System.identityHashCode(Object
                   o)</link> and <link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">Object.hashCode()</link>.</para>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">Object.hashCode()</link>.</para>
                 </listitem>
               </itemizedlist>
             </tip>
@@ -612,13 +612,13 @@ b1.equals(b2): true </programlisting>
                     role="bold">"TestA" == "TestA"</emphasis>);</programlisting>
 
                 <para>The method <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#identityHashCode-java.lang.Object-">System.identityHashCode(Object
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#identityHashCode-java.lang.Object-">System.identityHashCode(Object
                 o)</link> returns <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">Object.hashCode()</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--">Object.hashCode()</link>
                 rather then <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#hashCode--">String.hashCode()</link>.
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#hashCode--">String.hashCode()</link>.
                 This hash code from <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html">java.lang.Object</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html">java.lang.Object</link>
                 has a one to one correspondence to an object's reference and
                 thus helps to understand the underlying object
                 references:</para>
@@ -720,7 +720,7 @@ b1.equals(b2): true </programlisting>
               <orderedlist>
                 <listitem>
                   <para>The <link
-                  xlink:href="http://prog.medieninformatik.hdm-stuttgart.de/java_visualize">Java
+                  xlink:href="https://prog.medieninformatik.hdm-stuttgart.de/java_visualize">Java
                   visualizer</link> may be helpful.</para>
                 </listitem>
 
diff --git a/Doc/Sd1/deployment.xml b/Doc/Sd1/deployment.xml
index 3152f959b..167452920 100644
--- a/Doc/Sd1/deployment.xml
+++ b/Doc/Sd1/deployment.xml
@@ -13,7 +13,7 @@
     <title>Preparations</title>
 
     <para>Read <link
-    xlink:href="http://www.cs.swarthmore.edu/~newhall/unixhelp/debuggingtips_Java.html">http://www.cs.swarthmore.edu/~newhall/unixhelp/debuggingtips_Java.html</link>
+    xlink:href="https://www.cs.swarthmore.edu/~newhall/unixhelp/debuggingtips_Java.html">http://www.cs.swarthmore.edu/~newhall/unixhelp/debuggingtips_Java.html</link>
     up to including the <quote>The <code>CLASSPATH</code> environment variable
     and JAR files</quote> section.</para>
   </section>
@@ -72,7 +72,7 @@
 
                       <para>You may search the <xref linkend="glo_API"/> of
                       class <classname
-                      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Character.html">Character</classname>
+                      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html">Character</classname>
                       assisting you to distinguish letters from
                       non-letters.</para>
                     </listitem>
@@ -160,7 +160,7 @@ Your sample's median is: 6.0</programlisting>
                 7</code></quote> to your <code>main(String [] args)</code>
                 method. These strings must be converted to integer values.
                 This may be achieved by means of <methodname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#parseInt-java.lang.String-">parseInt(String)</methodname>.</para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#parseInt-java.lang.String-">parseInt(String)</methodname>.</para>
 
                 <para>Depending on inconsistent user input like
                 <quote><code>three</code></quote> instead of
@@ -317,9 +317,9 @@ public class InputValidator {
 
                 <para>Among several configuration possibilities you may use
                 the <link
-                xlink:href="http://maven.apache.org/plugins/maven-jar-plugin">Maven
+                xlink:href="https://maven.apache.org/plugins/maven-jar-plugin">Maven
                 JAR Plugin</link> and its <option
-                xlink:href="http://maven.apache.org/plugins/maven-jar-plugin/usage.html#How_to_build_a_JAR_file">package</option>
+                xlink:href="https://maven.apache.org/plugins/maven-jar-plugin/usage.html#How_to_build_a_JAR_file">package</option>
                 goal. You have to add this plugin to the <tag
                 class="starttag">plugins</tag> section of your
                 <filename>pom.xml</filename> file. The plugin in turn requires
diff --git a/Doc/Sd1/gettingStarted.xml b/Doc/Sd1/gettingStarted.xml
index c4ee4e1b6..f0225d401 100644
--- a/Doc/Sd1/gettingStarted.xml
+++ b/Doc/Sd1/gettingStarted.xml
@@ -28,7 +28,7 @@
                     possible limitations with respect to the number of
                     concurrent sessions HdM Members <emphasis>might</emphasis>
                     be able to access this book online at <uri
-                    xlink:href="http://proquest.safaribooksonline.com/9780992133047">http://proquest.safaribooksonline.com/9780992133047</uri>.</para>
+                    xlink:href="https://proquest.safaribooksonline.com/9780992133047">http://proquest.safaribooksonline.com/9780992133047</uri>.</para>
                   </listitem>
                 </itemizedlist>
               </glossdef>
@@ -68,7 +68,7 @@
                 <itemizedlist>
                   <listitem>
                     <para><link
-                    xlink:href="http://software-carpentry.org/v4/shell">The
+                    xlink:href="https://software-carpentry.org/v4/shell">The
                     Unix Shell</link> / Software-carpentry, nice video
                     collection. Each section is also available in PDF and
                     <trademark>PowerPoint</trademark> format.</para>
@@ -111,7 +111,7 @@
           program's memory management:</para>
 
           <para><link
-          xlink:href="http://prog.medieninformatik.hdm-stuttgart.de/java_visualize">http://prog.medieninformatik.hdm-stuttgart.de/java_visualize</link></para>
+          xlink:href="https://prog.medieninformatik.hdm-stuttgart.de/java_visualize">http://prog.medieninformatik.hdm-stuttgart.de/java_visualize</link></para>
 
           <para>Credits to <link
           xlink:href="https://github.com/daveagp/java_visualize/blob/master/README">David
@@ -137,10 +137,10 @@
           <itemizedlist>
             <listitem>
               <para><link
-              xlink:href="http://wiki.eclipse.org/Eclipse/Installation">Installation</link>,
+              xlink:href="https://wiki.eclipse.org/Eclipse/Installation">Installation</link>,
               choose <quote>Eclipse IDE for Java EE Developers</quote> from
               <link
-              xlink:href="http://eclipse.org/downloads">http://eclipse.org/downloads</link>.</para>
+              xlink:href="https://eclipse.org/downloads">http://eclipse.org/downloads</link>.</para>
             </listitem>
           </itemizedlist>
         </glossdef>
@@ -178,22 +178,22 @@
           installation.</para>
 
           <para>The image contains (hopefully) all related tools from the
-          <link xlink:href="http://www.mi.hdm-stuttgart.de">CSM</link>
+          <link xlink:href="https://www.mi.hdm-stuttgart.de">CSM</link>
           department's lecture room Linux installation with respect to the
           current and upcoming lectures:</para>
 
           <itemizedlist>
             <listitem>
               <para>Eclipse J2EE version with <productname
-              xlink:href="http://www.eclipse.org/datatools">Database developer
+              xlink:href="https://www.eclipse.org/datatools">Database developer
               tools</productname>, and <productname
-              xlink:href="http://git-scm.com">git</productname> plugins
+              xlink:href="https://git-scm.com">git</productname> plugins
               installed.</para>
             </listitem>
 
             <listitem>
               <para>A running <productname
-              xlink:href="http://www.mysql.com/">Mysql</productname> server
+              xlink:href="https://www.mysql.com/">Mysql</productname> server
               preconfigured with user <quote><code>hdmuser</code></quote>,
               password <quote><code>XYZ</code></quote> (<emphasis
               role="bold">capital letters!</emphasis>) and database
@@ -207,7 +207,7 @@
               based on <productname
               xlink:href="http://docbook.org/tdg5/index.html">docbook</productname>
               or <productname
-              xlink:href="http://en.wikipedia.org/wiki/Darwin_Information_Typing_Architecture">DITA</productname>.</para>
+              xlink:href="https://en.wikipedia.org/wiki/Darwin_Information_Typing_Architecture">DITA</productname>.</para>
             </listitem>
           </itemizedlist>
 
@@ -272,7 +272,7 @@
           xlink:href="https://cloud.mi.hdm-stuttgart.de/owncloud">https://cloud.mi.hdm-stuttgart.de/owncloud</link>.
           Client software for Linux, Android, <productname>IOS</productname>,
           Windows, MacOS available at <link
-          xlink:href="http://owncloud.org/sync-clients">http://owncloud.org/sync-clients</link>.</para>
+          xlink:href="https://owncloud.org/sync-clients">http://owncloud.org/sync-clients</link>.</para>
         </glossdef>
       </glossentry>
 
diff --git a/Doc/Sd1/languageFundamentals.xml b/Doc/Sd1/languageFundamentals.xml
index 9017fcd48..dd45e1dc2 100644
--- a/Doc/Sd1/languageFundamentals.xml
+++ b/Doc/Sd1/languageFundamentals.xml
@@ -21,7 +21,7 @@
             <para>Which of the following names are legal variable names?
             Complete the following table and explain your decision with
             respect to the <quote
-            xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc4_html_3">variables</quote>
+            xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc4_html_3">variables</quote>
             section.</para>
 
             <informaltable border="1">
@@ -354,7 +354,7 @@
 
                 <listitem>
                   <para>A negative value in <link
-                  xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+                  xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
                   complement</link> representation starts with a
                   <quote>1</quote> at its highest bit. Binary literals in
                   <xref linkend="glo_Java"/> represent <code>int</code>
@@ -445,7 +445,7 @@
 
               <tip>
                 <para>You may want to consider the <quote
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc6_html_2">Literals</quote>
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc6_html_2">Literals</quote>
                 section of <xref linkend="bib_Kurniawan2015"/> learning about
                 hexadecimal integer value representation.</para>
               </tip>
@@ -475,7 +475,7 @@
               is <emphasis role="bold">always</emphasis> large enough to hold
               color intensity values ranging from 0 to 255. Give an answer
               being based on the <link
-              xlink:href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.2.1">specification</link>
+              xlink:href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.2.1">specification</link>
               and not just by try-and-error.</para>
 
               <para>The programmer tries to adopt the <link
@@ -511,7 +511,7 @@ System.out.println("Maximum short value:" + maximum);
               <tip>
                 <para>Which integer literals types do exist according to the
                 <xref linkend="glo_Java"/> <link
-                xlink:href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.10.1">standard</link>?</para>
+                xlink:href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.10.1">standard</link>?</para>
               </tip>
             </question>
 
@@ -579,7 +579,7 @@ System.out.println("Maximum short value:" + maximum);
               <para>Even worse: The expression
               <code>0B10000000_00000000</code> is actually a four byte
               <code>int</code> literal using <link
-              xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+              xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
               complement</link> representation. Thus its value is
               <inlineequation>
                   <m:math display="inline">
@@ -688,12 +688,12 @@ System.out.println("Maximum short value:" + maximum);
 
               <para>In order to represent negative values as well <xref
               linkend="glo_Java"/> uses <link
-              xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+              xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
               complement</link> representation. We provide some values:</para>
 
               <table border="1" xml:id="sw1Table4ByteIntegerRepresentation">
                 <caption>4 Byte <link
-                xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+                xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
                 complement</link> representation of <code>int</code>
                 values.</caption>
 
@@ -767,12 +767,12 @@ System.out.println("Maximum short value:" + maximum);
               </table>
 
               <para>Use <link
-              xlink:href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.10.1"><code>int</code>
+              xlink:href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.10.1"><code>int</code>
               literals</link> in <link
-              xlink:href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-BinaryNumeral">binary
+              xlink:href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-BinaryNumeral">binary
               representation</link> like e.g. <code>0B1100</code> in section
               <quote
-              xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc6_html_2">Literals</quote>
+              xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc6_html_2">Literals</quote>
               in order to write an <code>int</code>'s minimum and maximum
               possible value to standard output.</para>
 
@@ -788,7 +788,7 @@ System.out.println("Maximum short value:" + maximum);
 
             <answer>
               <para>We insert <link
-              xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+              xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
               complement</link> representations of minimum and maximum int
               values according to <xref
               linkend="sw1Table4ByteIntegerRepresentation"/>.</para>
@@ -882,7 +882,7 @@ System.out.println("Maximum short value:" + maximum);
 
               <tip>
                 <para>You may want to read the <link
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc1_html_4">overview
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc1_html_4">overview
                 section</link> on statements.</para>
               </tip>
             </question>
@@ -1217,7 +1217,7 @@ System.out.println("New value=" + a);</programlisting>
 
               <tip>
                 <para>You may want to read the <link
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc1_html_4">overview
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc1_html_4">overview
                 section</link> on statements.</para>
               </tip>
             </question>
@@ -1228,7 +1228,7 @@ System.out.println("New value=" + a);</programlisting>
               error.</para>
 
               <para>Since <xref linkend="glo_Java"/> uses <link
-              xlink:href="http://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
+              xlink:href="https://en.wikipedia.org/wiki/Two's_complement#firstHeading">Two's
               complement</link> representation we have:</para>
 
               <informaltable border="1">
@@ -1452,7 +1452,7 @@ System.out.println("New value=" + a);</programlisting>
             <tip>
               <para>Hunt for <quote>java escape double quote</quote> and read
               about <link
-              xlink:href="http://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc6_html_2#readertoolbar2">character
+              xlink:href="https://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-2-language-fundamentals/toc6_html_2#readertoolbar2">character
               literals</link>.</para>
             </tip>
           </question>
@@ -1568,7 +1568,7 @@ System.out.println("New value=" + a);</programlisting>
 
             <tip>
               <para>You may want to read the <quote
-              xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc5_html_2">Constants</quote>
+              xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc5_html_2">Constants</quote>
               section of <xref linkend="bib_Kurniawan2015"/>.</para>
             </tip>
           </question>
diff --git a/Doc/Sd1/objectsClasses.xml b/Doc/Sd1/objectsClasses.xml
index b14fc1d7f..56a4cc271 100644
--- a/Doc/Sd1/objectsClasses.xml
+++ b/Doc/Sd1/objectsClasses.xml
@@ -72,7 +72,7 @@
           <itemizedlist>
             <listitem>
               <para><link
-              xlink:href="http://stackoverflow.com/questions/24252256/how-to-enable-index-downloads-in-eclipse-for-maven-search">Enabling
+              xlink:href="https://stackoverflow.com/questions/24252256/how-to-enable-index-downloads-in-eclipse-for-maven-search">Enabling
               maven indexing</link> in Eclipse.</para>
             </listitem>
           </itemizedlist>
@@ -110,9 +110,9 @@ javac 1.8.0_66</programlisting>
 
         <listitem>
           <para>Use the <link
-          xlink:href="http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/mars1">Eclipse
+          xlink:href="https://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/mars1">Eclipse
           IDE for Java EE Developers</link> flavour rather then merely <link
-          xlink:href="http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/mars1">Eclipse
+          xlink:href="https://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/mars1">Eclipse
           IDE for Java Developers</link>. Reason: The J2ee version does
           include (among other things) <xref linkend="glo_Maven"/>.</para>
         </listitem>
@@ -283,7 +283,7 @@ javac 1.8.0_66</programlisting>
             <qandaentry>
               <question>
                 <para>Extend the <link
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc2_html_5">Employee
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc2_html_5">Employee
                 example from chapter 4</link> by adding two methods:</para>
 
                 <itemizedlist>
@@ -411,7 +411,7 @@ Salary:30000.00&lt;/pre&gt;
 
                 <tip>
                   <para>Read the <link
-                  xlink:href="http://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-4-objects-and-classes/toc8_html_3">section
+                  xlink:href="https://proquest.safaribooksonline.com/book/programming/java/9780992133047/chapter-4-objects-and-classes/toc8_html_3">section
                   about the <quote>this</quote></link> keyword.</para>
                 </tip>
               </question>
@@ -1253,7 +1253,7 @@ public class Driver {
 }</programlisting>
 
               <para>This error is in accordance with Table 4.1 from the <link
-              xlink:href="http://techbus.safaribooksonline.com/9780992133047/toc7_html_3">Encapsulation
+              xlink:href="https://techbus.safaribooksonline.com/9780992133047/toc7_html_3">Encapsulation
               and Access Control</link> section: The attributes
               <property>age</property> and <property>salary</property> have no
               access modifiers at all hence <quote>default</quote> access is
@@ -1274,7 +1274,7 @@ public class Driver {
                   <glossdef>
                     <para>Raising access level from default to
                     <code>public</code> thereby violating the <link
-                    xlink:href="http://en.wikipedia.org/wiki/Encapsulation_(object-oriented_programming)">principle
+                    xlink:href="https://en.wikipedia.org/wiki/Encapsulation_(object-oriented_programming)">principle
                     of encapsulation</link>:</para>
 
                     <programlisting language="java">public class Employee {
@@ -1813,7 +1813,7 @@ Is 2016 a leap year? true</programlisting>
               <orderedlist>
                 <listitem>
                   <para>Consider the <link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#sin-double-">sin(...)</link>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#sin-double-">sin(...)</link>
                   function. The documentation will tell you that the argument
                   to sin(...) is expected to be in radians rather than common
                   degree values from [0,360[ being expected on output. So you
@@ -1834,7 +1834,7 @@ Is 2016 a leap year? true</programlisting>
                 <listitem>
                   <para>Rounding the sine's value is the crucial part here.
                   The function <link
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#round-double-">round()</link>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#round-double-">round()</link>
                   is quite helpful. Consider the following example rounding
                   23.22365 to four decimal places:</para>
 
@@ -1845,7 +1845,7 @@ Is 2016 a leap year? true</programlisting>
 
                     <listitem>
                       <para><link
-                      xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#round-double-">round(232236.5)</link>
+                      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#round-double-">round(232236.5)</link>
                       results in 232237 (long).</para>
                     </listitem>
 
@@ -2766,7 +2766,7 @@ Largest long value:9223372036854775807</programlisting></td>
                 </inlineequation>.</para>
 
               <para>Cancelling fractions requires implementing e.g. the <link
-              xlink:href="http://www.math.rutgers.edu/~greenfie/gs2004/euclid.html">Euclidean
+              xlink:href="https://www.math.rutgers.edu/~greenfie/gs2004/euclid.html">Euclidean
               algorithm</link> in order to find the greatest common divisor
               (<acronym>GCD</acronym>) of two non-zero integer values.</para>
 
@@ -2814,7 +2814,7 @@ Largest long value:9223372036854775807</programlisting></td>
 
               <para>Based on <methodname>getGcd(...)</methodname> implement
               the <link
-              xlink:href="http://en.wikipedia.org/wiki/Least_common_multiple">least
+              xlink:href="https://en.wikipedia.org/wiki/Least_common_multiple">least
               common multiple</link> of two long values:</para>
 
               <tip>
@@ -4035,7 +4035,7 @@ System.out.println(factorial(3));</programlisting>
                       or <link
                       xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#nanoTime--">nanoTime</link>.
                       <quote
-                      xlink:href="http://www.mkyong.com/java/how-do-calculate-elapsed-execute-time-in-java">See
+                      xlink:href="https://www.mkyong.com/java/how-do-calculate-elapsed-execute-time-in-java">See
                       How to calculate elapsed / execute time in
                       Java</quote>.</para>
                     </tip>
@@ -4351,7 +4351,7 @@ Ratio Recursive / Loop: 65554</programlisting></td>
                 exp(double)</methodname> inside a class
                 <package>Math</package> choosing a package of your choice. The
                 name clash with the Java standard class <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html">java.lang.Math</link>
                 is intended: You'll learn how to resolve naming
                 conflicts.</para>
 
@@ -4391,7 +4391,7 @@ Ratio Recursive / Loop: 65554</programlisting></td>
                 <para>Compare your results using <code>seriesLimit=8</code>
                 terms and the corresponding values from the professional
                 implementation <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#exp-double">java.lang.Math.exp</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#exp-double">java.lang.Math.exp</link>
                 by calculating <inlineequation>
                     <m:math display="inline">
                       <m:msup>
@@ -4921,7 +4921,7 @@ e^3=19.412499999999998, difference=-0.67303692318767</programlisting>
                       </m:mrow>
                     </m:math>
                   </inlineequation> using <varname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">java.lang.Math.PI</varname>.
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#PI">java.lang.Math.PI</varname>.
                 Explain your results</para>
               </question>
 
@@ -5983,7 +5983,7 @@ sin(4 * PI)=4518.2187229323445, difference=4518.2187229323445</programlisting>
                 arguments to this interval appropriately.</para>
 
                 <para>Hint: The standard function <methodname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#floor-double-">Math.rint(double)</methodname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#floor-double-">Math.rint(double)</methodname>
                 could be helpful: It may turn e.g. 4.47 (<code>double</code>)
                 to 4 (<code>long</code>).</para>
               </question>
@@ -6039,9 +6039,9 @@ sin(4 * PI)=4518.2187229323445, difference=4518.2187229323445</programlisting>
       <title>Simulating a car jump</title>
 
       <para>We want to model a <link
-      xlink:href="http://www.sciencechannel.com/tv-shows/outrageous-acts-of-science/videos/insane-car-jump">car
+      xlink:href="https://www.sciencechannel.com/tv-shows/outrageous-acts-of-science/videos/insane-car-jump">car
       jump</link> to be used in a computer game. <link
-      xlink:href="http://www.sciencechannel.com/tv-shows/outrageous-acts-of-science/videos/insane-car-jump">Watch
+      xlink:href="https://www.sciencechannel.com/tv-shows/outrageous-acts-of-science/videos/insane-car-jump">Watch
       the video</link> to understand the subsequent explanations</para>
 
       <section xml:id="sd1SectCarJumpBasic">
diff --git a/Doc/Sd1/statements.xml b/Doc/Sd1/statements.xml
index 98d57b4e0..696b58342 100644
--- a/Doc/Sd1/statements.xml
+++ b/Doc/Sd1/statements.xml
@@ -2022,7 +2022,7 @@ Congratulations! you won!</programlisting>
 
               <para>You will fully understand the above expression
               <function>Math.min(...)</function> after finishing the <quote
-              xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc12_html">Static
+              xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc12_html">Static
               Final Variables</quote> section.</para>
             </answer>
           </qandaentry>
@@ -2045,7 +2045,7 @@ Congratulations! you won!</programlisting>
 
               <tip>
                 <para>The operator <quote
-                xlink:href="http://proquest.safaribooksonline.com/9780992133047/toc8_html">%</quote>
+                xlink:href="https://proquest.safaribooksonline.com/9780992133047/toc8_html">%</quote>
                 allows for testing whether a given integer value
                 <code>n</code> can be divided by an another integer value
                 <code>k</code> without remainder.</para>
@@ -2673,7 +2673,7 @@ Congratulations! you won!</programlisting>
               <para>As expected we find an identical value for the desired
               smallest integer value of 2*2*2*2*3*3*5*7*11*13*17*19 =
               232792560 which is the <link
-              xlink:href="http://en.wikipedia.org/wiki/Least_common_multiple">least
+              xlink:href="https://en.wikipedia.org/wiki/Least_common_multiple">least
               common multiple</link> of [2, 3, ...20].</para>
             </answer>
           </qandaentry>
@@ -2691,11 +2691,11 @@ Congratulations! you won!</programlisting>
           <qandaentry>
             <question>
               <para>Read the <link
-              xlink:href="http://en.wikipedia.org/wiki/Pythagorean_triple">definition
+              xlink:href="https://en.wikipedia.org/wiki/Pythagorean_triple">definition
               of Pythagorean triples</link>.</para>
 
               <para>Find all <link
-              xlink:href="http://en.wikipedia.org/wiki/Pythagorean_triple">Pythagorean
+              xlink:href="https://en.wikipedia.org/wiki/Pythagorean_triple">Pythagorean
               triples</link> <inlineequation>
                   <m:math display="inline">
                     <m:mrow>
diff --git a/Doc/Sd1/streams.xml b/Doc/Sd1/streams.xml
index b898ae441..4fce7375b 100644
--- a/Doc/Sd1/streams.xml
+++ b/Doc/Sd1/streams.xml
@@ -69,7 +69,7 @@
               <listitem>
                 <para>Given the name of an existing file you may create an
                 instance of <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>:</para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>:</para>
 
                 <programlisting language="java">final FileReader fileReader = new FileReader(inputFileName);
 final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</programlisting>
@@ -77,20 +77,20 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
 
               <listitem>
                 <para>You will have to deal with possible <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html">FileNotFoundException</classname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html">FileNotFoundException</classname>
                 problems providing meaningful error messages.</para>
               </listitem>
 
               <listitem>
                 <para>The <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>
                 class provides a method <methodname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html#readLine--">readLine()</methodname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html#readLine--">readLine()</methodname>
                 allowing to access a given file's content line by line.</para>
 
                 <caution>
                   <para>Even if a file exists you have my encounter <classname
-                  xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html">IOException</classname>
+                  xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html">IOException</classname>
                   problems being related to <acronym>i.e.</acronym> missing
                   permissions.</para>
                 </caution>
@@ -123,7 +123,7 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
 
             <para>Notice the second test which will only succeed if a
             <classname
-            xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html">FileNotFoundException</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html">FileNotFoundException</classname>
             is being thrown.</para>
           </answer>
         </qandaentry>
@@ -139,14 +139,14 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
           <question>
             <para>In this exercise we will partly implement the (Gnu) UNIX
             command line tool <command
-            xlink:href="http://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">wc</command>
+            xlink:href="https://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">wc</command>
             (word count). Prior to starting this exercise you may want
             to:</para>
 
             <itemizedlist>
               <listitem>
                 <para>Execute <command
-                xlink:href="http://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">wc</command>
+                xlink:href="https://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">wc</command>
                 for sample text files like e.g. a Java source file of
                 similar:</para>
 
@@ -157,7 +157,7 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
                 <para>What do these three numbers 58, 198 and 1341 mean?
                 Execute <command>wc</command> <option>--help</option> or
                 <command>man</command> <option>wc</option> or read the <link
-                xlink:href="http://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">HTML
+                xlink:href="https://www.gnu.org/software/coreutils/manual/html_node/wc-invocation.html">HTML
                 documentation</link>.</para>
               </listitem>
 
@@ -176,7 +176,7 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
 
               <listitem>
                 <para><command>wc</command> can be used in <link
-                xlink:href="http://en.wikipedia.org/wiki/Pipeline_(Unix)">pipes</link>
+                xlink:href="https://en.wikipedia.org/wiki/Pipeline_(Unix)">pipes</link>
                 () like:</para>
 
                 <programlisting language="bourne">goik &gt;grep int BoundedIntegerStore.java | wc
@@ -223,16 +223,16 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
                 to and count characters, words and lines of a single input
                 file. Instances of this class may be initialized from a
                 <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>.</para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>.</para>
 
                 <para>Write corresponding tests.</para>
               </listitem>
 
               <listitem>
                 <para>You may create an instance of <classname
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html">BufferedReader</classname>
                 from <link
-                xlink:href="http://docs.oracle.com/javase/8/docs/api/java/lang/System.html#in">System.in</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/System.html#in">System.in</link>
                 via:</para>
 
                 <programlisting language="java">new BufferedReader(new InputStreamReader(System.in))</programlisting>
@@ -241,7 +241,7 @@ final BufferedReader inputBufferedReader = new BufferedReader(fileReader);</prog
               <listitem>
                 <para>Create an executable Jar archive and execute some
                 examples. The UNIX command <command
-                xlink:href="http://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html#cat-invocation">cat</command>
+                xlink:href="https://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html#cat-invocation">cat</command>
                 writes a file's content to standard output. This output may be
                 piped as input to your application as in <code>cat
                 filename.txt | java -jar .../wc-1.0.jar</code>.</para>
diff --git a/Doc/Sda1/dom.xml b/Doc/Sda1/dom.xml
index bb7cc760d..e5a18925a 100644
--- a/Doc/Sda1/dom.xml
+++ b/Doc/Sda1/dom.xml
@@ -8,10 +8,10 @@
          xmlns:html="http://www.w3.org/1999/xhtml"
          xmlns:db="http://docbook.org/ns/docbook">
   <title>The Document Object Model (<acronym
-  xlink:href="http://www.w3.org/DOM">DOM</acronym>)</title>
+  xlink:href="https://www.w3.org/DOM">DOM</acronym>)</title>
 
   <titleabbrev><acronym
-  xlink:href="http://www.w3.org/DOM">DOM</acronym></titleabbrev>
+  xlink:href="https://www.w3.org/DOM">DOM</acronym></titleabbrev>
 
   <section xml:id="sda1SectDomPreconditions">
     <title>Required knowledge</title>
@@ -53,7 +53,7 @@
 
       <listitem>
         <para>Some applications may want to select node sets by <acronym
-        xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> expressions
+        xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> expressions
         which is completely impossible in a <acronym
         xlink:href="http://www.saxproject.org">SAX</acronym>
         application.</para>
@@ -70,25 +70,25 @@
     xlink:href="http://www.saxproject.org">SAX</acronym> is the fact that an
     XML instance is not represented as a tree like structure but as a
     succession of events. The <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> allows us to represent
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> allows us to represent
     XML document instances as tree like structures and thus enables
     navigational operations between nodes.</para>
 
     <para>In order to achieve language <emphasis>and</emphasis> software
     vendor independence the <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> approach uses two
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> approach uses two
     stages:</para>
 
     <itemizedlist>
       <listitem>
-        <para>The <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> is
+        <para>The <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> is
         formulated in an Interface Definition Language (<abbrev
-        xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>)</para>
+        xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>)</para>
       </listitem>
 
       <listitem>
         <para>In order to use the <acronym
-        xlink:href="http://www.w3.org/DOM">DOM</acronym> API by a concrete
+        xlink:href="https://www.w3.org/DOM">DOM</acronym> API by a concrete
         programming language a so called <emphasis>language binding</emphasis>
         is required. In languages like <xref linkend="glo_Java"/> the language
         binding will still be a set of <xref linkend="glo_Java"/> interfaces.
@@ -98,21 +98,21 @@
     </itemizedlist>
 
     <para>So what exactly may an <abbrev
-    xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
+    xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
     be? The programming language <xref linkend="glo_Java"/> already allows
     pure interface definitions without any implementation. In C++ the same
     result can be achieved by so called <emphasis>pure virtual
     classes</emphasis>. An <abbrev
-    xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
+    xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
     offers extended features to describe such interfaces. For <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> the <productname
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> the <productname
     xlink:href="http://www.omg.org/gettingstarted/corbafaq.htm">CORBA
     2.2</productname> <abbrev
-    xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
+    xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
     had been chosen to describe an XML document programming interface. As a
     first example we take an excerpt from the <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym>'s <link
-    xlink:href="http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-1950641247">Node</link>
+    xlink:href="https://www.w3.org/DOM">DOM</acronym>'s <link
+    xlink:href="https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-1950641247">Node</link>
     interface definition:</para>
 
     <programlisting language="none">interface Node {
@@ -138,15 +138,15 @@
    ...</programlisting>
 
     <para>If we want to implement the <abbrev
-    xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
+    xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
     <classname>org.w3c.dom.Node</classname> specification in e.g. <xref
     linkend="glo_Java"/> a language binding has to be defined. This means
     writing <xref linkend="glo_Java"/> code which closely resembles the
     <abbrev
-    xlink:href="http://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
+    xlink:href="https://en.wikipedia.org/wiki/Interface_description_language">IDL</abbrev>
     specification. Obviously this task depends on and is restricted by the
     constructs being offered by the target programming language. The W3C <link
-    xlink:href="http://www.w3.org/TR/DOM-Level-3-Core/java-binding.html">defines</link>
+    xlink:href="https://www.w3.org/TR/DOM-Level-3-Core/java-binding.html">defines</link>
     the <xref linkend="glo_Java"/> <classname>org.w3c.dom.Node</classname>
     interface by:</para>
 
@@ -204,13 +204,13 @@ public interface Node {
 
     <para>An XML API may address this issue by offering data types to
     represent these different kinds of nodes. The <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> <xref
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> <xref
     linkend="glo_Java"/> Binding defines an inheritance hierarchy of
     interfaces for this purpose:</para>
 
     <figure xml:id="domJavaNodeInterfaces">
       <title>Inheritance interface hierarchy in the <acronym
-      xlink:href="http://www.w3.org/DOM">DOM</acronym> <xref
+      xlink:href="https://www.w3.org/DOM">DOM</acronym> <xref
       linkend="glo_Java"/> binding</title>
 
       <mediaobject>
@@ -224,13 +224,13 @@ public interface Node {
     linkend="glo_DOM"/> implementation including parsers, XPath engines etc.
     .</para>
 
-    <para>The <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym>'s
+    <para>The <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym>'s
     specification defines a (still growing) set of<link
-    xlink:href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/introduction.html#DOMArchitecture-h2">
+    xlink:href="https://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/introduction.html#DOMArchitecture-h2">
     modules</link>. An implementation may not implement all of these:</para>
 
     <figure xml:id="figureDomModules">
-      <title><acronym xlink:href="http://www.w3.org/DOM">DOM</acronym>
+      <title><acronym xlink:href="https://www.w3.org/DOM">DOM</acronym>
       modules.</title>
 
       <mediaobject>
@@ -329,7 +329,7 @@ public interface Node {
 
       <listitem>
         <para>Create an empty <link
-        xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/w3c/dom/Document.html">Document</link>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/org/w3c/dom/Document.html">Document</link>
         instance.</para>
       </listitem>
 
@@ -399,9 +399,9 @@ public class CreateDoc {
             <filename>pom.xml</filename>.</para>
 
             <para>The <acronym
-            xlink:href="http://www.w3.org/DOM">DOM</acronym> creating example
+            xlink:href="https://www.w3.org/DOM">DOM</acronym> creating example
             given before may be used as a starting point. Extend the <acronym
-            xlink:href="http://www.w3.org/DOM">DOM</acronym> tree created in
+            xlink:href="https://www.w3.org/DOM">DOM</acronym> tree created in
             <xref linkend="simpleDomCreate"/> to produce an extended XML
             document:</para>
 
@@ -430,7 +430,7 @@ public class CreateDoc {
     xlink:href="http://www.saxproject.org">SAX</acronym> for parsing XML
     documents. Rather than handling <acronym
     xlink:href="http://www.saxproject.org">SAX</acronym> events ourselves we
-    prefer a <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> (in
+    prefer a <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> (in
     memory) representation of our document. The <link
     linkend="simpleCatalog">simple catalog</link> serves as an introductory
     example:</para>
@@ -444,9 +444,9 @@ public class CreateDoc {
     xlink:href="http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html">ErrorHandler</classname>
     instance during <acronym
     xlink:href="http://www.saxproject.org">SAX</acronym> processing. A
-    <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> Parser requires
+    <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> Parser requires
     a means to communicate parsing errors in case of trouble. In principle a
-    <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> parser
+    <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> parser
     implementor is free to choose his implementation but most implementations
     are based on top of a so called <acronym
     xlink:href="http://www.saxproject.org">SAX</acronym> parser. The <acronym
@@ -488,12 +488,12 @@ public class CreateDoc {
 }</programlisting>
 
     <para>We use this bit to assemble a <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> based <xref
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> based <xref
     linkend="glo_XML"/> parsing application:.</para>
 
     <figure xml:id="domTreeTraversal">
       <title>Accessing a XML Tree purely by <acronym
-      xlink:href="http://www.w3.org/DOM">DOM</acronym> methods.</title>
+      xlink:href="https://www.w3.org/DOM">DOM</acronym> methods.</title>
 
       <programlisting language="java">public class ReadCatalog {
 
@@ -857,12 +857,12 @@ Document contains 15 elements and 3 attributes.</programlisting>
               <xref linkend="createDocModify"/>. The idea is parsing the <link
               linkend="simpleCatalog">XML catalog instance</link> to a <xref
               linkend="glo_Java"/> <acronym
-              xlink:href="http://www.w3.org/DOM">DOM</acronym> object as
+              xlink:href="https://www.w3.org/DOM">DOM</acronym> object as
               before. Then construct a <emphasis>second</emphasis> <acronym
-              xlink:href="http://www.w3.org/DOM">DOM</acronym> tree
+              xlink:href="https://www.w3.org/DOM">DOM</acronym> tree
               representing the desired HTML output and fill in the article
               information from the first <acronym
-              xlink:href="http://www.w3.org/DOM">DOM</acronym> tree
+              xlink:href="https://www.w3.org/DOM">DOM</acronym> tree
               accordingly.</para>
 
               <tip>
@@ -1104,7 +1104,7 @@ public class Article2Html {
                 <callout arearefs="programlisting_catalog2html_glue_createhtmldom"
                          xml:id="programlisting_catalog2html_glue_createhtmldom_co">
                   <para>Create an instance holding a HTML <acronym
-                  xlink:href="http://www.w3.org/DOM">DOM</acronym> with a
+                  xlink:href="https://www.w3.org/DOM">DOM</acronym> with a
                   table header containing the strings <emphasis>Article
                   Description</emphasis> and <emphasis>Order
                   Number</emphasis>.</para>
@@ -1119,13 +1119,13 @@ public class Article2Html {
                          xml:id="programlisting_catalog2html_glue_insertprod_co">
                   <para>Insert the product's name an order number into the
                   HTML <acronym
-                  xlink:href="http://www.w3.org/DOM">DOM</acronym>.</para>
+                  xlink:href="https://www.w3.org/DOM">DOM</acronym>.</para>
                 </callout>
 
                 <callout arearefs="programlisting_catalog2html_glue_serialize"
                          xml:id="programlisting_catalog2html_glue_serialize_co">
                   <para>Serialize the completed HTML <acronym
-                  xlink:href="http://www.w3.org/DOM">DOM</acronym> tree to the
+                  xlink:href="https://www.w3.org/DOM">DOM</acronym> tree to the
                   output stream.</para>
                 </callout>
               </calloutlist>
@@ -1257,11 +1257,11 @@ public class Article2Html {
   </section>
 
   <section xml:id="domJavaScript">
-    <title>Using <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym>
+    <title>Using <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym>
     with HTML/Javascript</title>
 
     <para>Due to script language support in a variety of browsers we may also
-    use the <acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> to
+    use the <acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> to
     implement client side event handling. As an example we <link
     xlink:href="Sda1/Ref/src/tablesort.html">demonstrate</link> a JavaScript
     based sortable HTML table. The example code along with the code
@@ -1295,11 +1295,11 @@ public class Article2Html {
 
   <section xml:id="domXpath">
     <title>Using <acronym
-    xlink:href="http://www.w3.org/TR/xpath">XPath</acronym></title>
+    xlink:href="https://www.w3.org/TR/xpath">XPath</acronym></title>
 
     <para><xref linkend="domTreeTraversal"/> demonstrated the possibility to
     traverse trees solely by using <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> Method calls. Though this
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> Method calls. Though this
     approach is possible it will in general not lead to stable applications.
     Real world examples are often based on large XML documents with complex
     hierarchical structures. Thus using this rather primitive approach will
@@ -1308,11 +1308,11 @@ public class Article2Html {
     large code portions..</para>
 
     <para>As we already know from <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> transformations
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> transformations
     <code>Xpath</code> allows to address node sets inside a XML tree. The role
-    of <acronym xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> can be
+    of <acronym xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> can be
     compared to SQL queries when working with relational databases. <acronym
-    xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> may also be used
+    xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> may also be used
     within <xref linkend="glo_Java"/> code. As a first example we show an
     image filename extracting application operating on XHTML documents. The
     following example contains three <tag class="starttag">img</tag>
@@ -1353,7 +1353,7 @@ public class Article2Html {
     class="starttag">img</tag> elements:</para>
 
     <figure xml:id="gallery2imagelist">
-      <title>A <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <title>A <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       script for image name extraction.</title>
 
       <programlisting language="xml">&lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
@@ -1372,26 +1372,26 @@ public class Article2Html {
 
     <para>Note the necessity for <code>html</code> namespace (by prefix)
     inclusion into the <acronym
-    xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> expression in
+    xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> expression in
     <code>&lt;xsl:for-each select="//html:img"&gt;</code>. A simple
     <code>select="//img"&gt;</code> results in an empty node set. Executing
-    the <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> script
+    the <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> script
     yields a list of image filenames being contained in the HTML page i.e.
     <code>inline.gif one.gif two.gif</code>.</para>
 
     <para>As a preparation for an application checking image accessibility we
     want to rewrite the above <xref linkend="glo_XSL"/> as a <xref
     linkend="glo_Java"/> application. A simple approach may pipe the <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> output to our
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> output to our
     application which then executes the readability checks. Instead we want to
     incorporate the <acronym
-    xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> based search into
+    xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> based search into
     the application itself. Trying to resemble the <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> actions as closely
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> actions as closely
     as possible our application will also have to search for <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/w3c/dom/Element.html">Element</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/org/w3c/dom/Element.html">Element</link>
     Nodes by using the <acronym
-    xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> expression
+    xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> expression
     <code>//html:img</code>:</para>
 
     <figure xml:id="domFindImages">
@@ -1459,14 +1459,14 @@ public class Article2Html {
       <callout arearefs="programlisting_java_searchimg_pf"
                xml:id="programlisting_java_searchimg_pf_co">
         <para>Retrieving an <acronym
-        xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> factory
+        xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> factory
         instance.</para>
       </callout>
 
       <callout arearefs="programlisting_java_searchimg_newxpath"
                xml:id="programlisting_java_searchimg_newxpath_co">
         <para>Creating a <acronym
-        xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> query
+        xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> query
         instance. This may be used to search for a set of nodes starting from
         a context node. Notice the <varname>htmlNamespace</varname> instance
         which binds the prefix <quote>h</quote> to the <xref
@@ -1562,7 +1562,7 @@ public class Article2Html {
 
               <para>Write an application which checks for readability of
               <abbrev
-              xlink:href="http://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>
+              xlink:href="https://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>
               image references to <emphasis>external</emphasis> Servers
               starting either with <code>http://</code> or
               <code>https://</code> ignoring other protocol types. Internal
@@ -1573,7 +1573,7 @@ public class Article2Html {
               xlink:href="http://www.cafeconleche.org/books/bible2/chapters/ch17.html">starts-with()</link>
               testing for the <code>http</code> or <code>https</code> protocol
               definition part of an <abbrev
-              xlink:href="http://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>. A
+              xlink:href="https://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>. A
               possible output for the above example reads:</para>
 
               <programlisting language="none">xpath.CheckUrl (CheckUrl.java:51) - Protocol 'ftp' not yet implemented
@@ -1590,7 +1590,7 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
                 agent is unable to handle the current resource's content type
                 in question. You may catch a glimpse of related problems by
                 reading <link
-                xlink:href="http://stackoverflow.com/questions/1378199/how-to-check-if-a-url-exists-or-returns-404-with-java">How
+                xlink:href="https://stackoverflow.com/questions/1378199/how-to-check-if-a-url-exists-or-returns-404-with-java">How
                 to check if a URL exists or returns 404 with Java?</link>. For
                 the current exercise we will not dig deeper into the
                 subject.</para>
@@ -1621,7 +1621,7 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
                     <para>For analyzing the accessibility of referenced <xref
                     linkend="glo_HTTP"/> / <acronym>HTTPS</acronym> resources
                     see the previously mentioned discussion in <link
-                    xlink:href="http://stackoverflow.com/questions/1378199/how-to-check-if-a-url-exists-or-returns-404-with-java">How
+                    xlink:href="https://stackoverflow.com/questions/1378199/how-to-check-if-a-url-exists-or-returns-404-with-java">How
                     to check if a URL exists or returns 404 with
                     Java?</link>.</para>
                   </listitem>
@@ -1632,7 +1632,7 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
             <answer>
               <para>We are interested in the set of images within a given HTML
               document containing an <link
-              xlink:href="http://www.w3.org/Addressing">URL</link> reference
+              xlink:href="https://www.w3.org/Addressing">URL</link> reference
               starting with either of:</para>
 
               <itemizedlist>
@@ -1650,7 +1650,7 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
               </itemizedlist>
 
               <para>This may be achieved by the following <acronym
-              xlink:href="http://www.w3.org/TR/xpath">XPath</acronym>
+              xlink:href="https://www.w3.org/TR/xpath">XPath</acronym>
               expression:</para>
 
               <programlisting language="none">//xhtml:img[starts-with(@src, 'http://') or 
@@ -1658,7 +1658,7 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
 
               <para>Notice the prefix <quote>xhtml</quote> in the above
               <acronym
-              xlink:href="http://www.w3.org/TR/xpath">XPath</acronym>.
+              xlink:href="https://www.w3.org/TR/xpath">XPath</acronym>.
               Namespace handling is essential since our elements belong to the
               <xref linkend="glo_XHTML"/> namespace. We thus create a
               corresponding <classname
@@ -1689,14 +1689,14 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
   </section>
 
   <section xml:id="domXsl">
-    <title><acronym xlink:href="http://www.w3.org/DOM">DOM</acronym> and
-    <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev></title>
+    <title><acronym xlink:href="https://www.w3.org/DOM">DOM</acronym> and
+    <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev></title>
 
     <para><xref linkend="glo_Java"/> based <xref linkend="glo_XML"/>
     applications may use XSL style sheets for processing. A <acronym
-    xlink:href="http://www.w3.org/DOM">DOM</acronym> tree may for example be
+    xlink:href="https://www.w3.org/DOM">DOM</acronym> tree may for example be
     transformed into another tree. The package <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/transform/package-frame.html">javax.xml.transform</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/javax/xml/transform/package-frame.html">javax.xml.transform</link>
     provides interfaces and classes for this purpose. We consider the
     following product catalog example:</para>
 
@@ -1777,12 +1777,12 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
 </programlisting>
     </figure>
 
-    <para>A <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+    <para>A <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
     style sheet may be used to transform this document into the HTML
     Format:</para>
 
     <figure xml:id="catalog2html">
-      <title>A <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <title>A <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       style sheet for catalog transformation to HTML.</title>
 
       <programlisting language="xml">&lt;?xml version="1.0" encoding="utf-8"?&gt;
@@ -1816,9 +1816,9 @@ http://www.hdm-stuttgart.de/rotfl.gif, HTTP Status: Found</programlisting>
 
     <para>As a preparation for <xref linkend="sda1SectCatalog2html"/> we now
     demonstrate the usage of <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> within a <xref
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> within a <xref
     linkend="glo_Java"/> application. This is done by a <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/transform/Transformer.html">Transformer</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/javax/xml/transform/Transformer.html">Transformer</link>
     instance:</para>
 
     <figure xml:id="xml2xml">
diff --git a/Doc/Sda1/fo.xml b/Doc/Sda1/fo.xml
index 16c74c3fb..682e5ee20 100644
--- a/Doc/Sda1/fo.xml
+++ b/Doc/Sda1/fo.xml
@@ -17,7 +17,7 @@
     <titleabbrev>online / print</titleabbrev>
 
     <para>We already learned how to transform XML documents into HTML by means
-    of a <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> style
+    of a <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> style
     sheet processor. In principle we may create printed output by using a HTML
     Browser's print function. However the result will not meet reasonable
     typographical standards. A list of commonly required features for printed
@@ -65,8 +65,8 @@
 
         <listitem>
           <para>Document internal references via <link
-          xlink:href="http://www.w3.org/TR/xml#id">ID</link> / <link
-          xlink:href="http://www.w3.org/TR/xml#idref">IDREF</link> pairs may
+          xlink:href="https://www.w3.org/TR/xml#id">ID</link> / <link
+          xlink:href="https://www.w3.org/TR/xml#idref">IDREF</link> pairs may
           be represented as page references like <quote>see page
           32</quote>.</para>
         </listitem>
@@ -105,7 +105,7 @@
 
   <section xml:id="foStart">
     <title>A simple <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     document</title>
 
     <titleabbrev>Simple <xref linkend="glo_FO"/></titleabbrev>
@@ -157,7 +157,7 @@
     <para>The result from of our <quote>Hello, World ...</quote> code is not
     very impressive. In order to develop more elaborated examples we have to
     understand the underlying layout model being defined in a <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_simple-page-master">fo:simple-page-master</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_simple-page-master">fo:simple-page-master</link>
     element. First of all <xref linkend="glo_FO"/> allows for subdividing a
     physical page into different regions:</para>
 
@@ -172,19 +172,19 @@
     </figure>
 
     <para>The most important area in this model is denoted by <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>.
+    xlink:href="https://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>.
     Other regions like <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_region-before">fo:region-before</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_region-before">fo:region-before</link>
     are typically used as containers for meta information such as chapter
     headings and page numbering. We take a closer look to the <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
     area and supply an example of parameterization:</para>
 
     <figure xml:id="foParamRegBody">
       <title>A complete <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       parameterizing of a physical page and the <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>.</title>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>.</title>
 
       <programlisting language="xml">&lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format"
@@ -249,7 +249,7 @@
 
       <callout arearefs="programlisting_fobodyreg_pagesequence">
         <para>A <abbrev
-        xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+        xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
         document may have multiple page sequences for example one per each
         chapter of a book. It <emphasis>must</emphasis> reference an
         <emphasis>existing</emphasis> layout definition via its
@@ -268,9 +268,9 @@
         <para>A <tag class="starttag">fo:block</tag> element may be compared
         to a paragraph element <tag class="starttag">p</tag> in HTML. The
         attribute <link
-        xlink:href="http://www.w3.org/TR/xsl/#space-after">space-after</link>="2mm"
+        xlink:href="https://www.w3.org/TR/xsl/#space-after">space-after</link>="2mm"
         adds a space of two mm after each <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_block">fo:block</link>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_block">fo:block</link>
         container.</para>
       </callout>
     </calloutlist>
@@ -298,28 +298,28 @@
     headers and footers frequently being used for page numbers. In a textbook
     each page might have the actual chapter's name in its header. This name
     should not change as long as the text below <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
     still belongs to the same chapter. In <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     this is achieved by:</para>
 
     <itemizedlist>
       <listitem>
         <para>Encapsulating each chapter's content in a <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
         of its own.</para>
       </listitem>
 
       <listitem>
         <para>Defining the desired header text below <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
         in the area defined by <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_region-before">fo:region-before</link>.</para>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_region-before">fo:region-before</link>.</para>
       </listitem>
     </itemizedlist>
 
     <para>The notion <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
     refers to the fact that the content is constant (static) within the given
     page sequence. The new version reads:</para>
 
@@ -476,13 +476,13 @@
     <para>The free chapter from <xref linkend="bib_Harold04"/> book contains
     additional information on extended <link
     xlink:href="http://www.cafeconleche.org/books/bible2/chapters/ch18.html#d1e2250">layout
-    definitions</link>. The <orgname xlink:href="http://w3.org">W3C</orgname>
+    definitions</link>. The <orgname xlink:href="https://www.w3.org">W3C</orgname>
     as the holder of the FO standard defines the elements <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_layout-master-set">fo:layout-master-set</link>,
+    xlink:href="https://www.w3.org/TR/xsl/#fo_layout-master-set">fo:layout-master-set</link>,
     <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_simple-page-master">fo:simple-page-master</link>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_simple-page-master">fo:simple-page-master</link>
     and <link
-    xlink:href="http://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link></para>
+    xlink:href="https://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link></para>
   </section>
 
   <section xml:id="foContainer">
@@ -493,17 +493,17 @@
 
       <para>The FO standard borrows a lot from the CSS standard. Most
       formatting objects may have <link
-      xlink:href="http://www.w3.org/TR/xsl/#section-N19349-Description-of-Property-Groups">CSS
+      xlink:href="https://www.w3.org/TR/xsl/#section-N19349-Description-of-Property-Groups">CSS
       like properties</link> with similar semantics, some properties have been
       added. We take a <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_block">fo:block</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_block">fo:block</link>
       container as an example:</para>
 
       <figure xml:id="blockInline">
         <title>A <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_block">fo:block</link> with a
+        xlink:href="https://www.w3.org/TR/xsl/#fo_block">fo:block</link> with a
         <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_inline">fo:inline</link>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_inline">fo:inline</link>
         descendant.</title>
 
         <mediaobject>
@@ -521,7 +521,7 @@
       </figure>
 
       <para>The <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_inline">fo:inline</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_inline">fo:inline</link>
       descendant serves as a means to change the <quote>current</quote>
       property set. In HTML/CSS this may be achieved by using the
       <code>SPAN</code> tag:</para>
@@ -557,11 +557,11 @@
       expressed by the <code>UL</code>/<code>LI</code> tags in HTML. FO allows
       a much more detailed parametrization regarding indents and distances
       between labels and item content. Relevant elements are <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_list-block">fo:list-block</link>,
+      xlink:href="https://www.w3.org/TR/xsl/#fo_list-block">fo:list-block</link>,
       <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_list-item">fo:list-item</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_list-item">fo:list-item</link>
       and <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_list-item-body">fo:list-item-body</link>.
+      xlink:href="https://www.w3.org/TR/xsl/#fo_list-item-body">fo:list-item-body</link>.
       The drawback is a more complex setup for <quote>default</quote>
       lists:</para>
 
@@ -613,7 +613,7 @@
 
       <para>Sometimes adjustable horizontal space between two neighbouring
       objects has to be filled e.g. in a book's table of contents. The <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_leader">fo:leader</link> serves
+      xlink:href="https://www.w3.org/TR/xsl/#fo_leader">fo:leader</link> serves
       this purpose:</para>
 
       <figure xml:id="leaderToc">
@@ -636,16 +636,16 @@ page 42&lt;/fo:block&gt; ...</programlisting>
       </figure>
 
       <para>The attributes' value <link
-      xlink:href="http://www.w3.org/TR/xsl/#text-align-last">text-align-last</link>
+      xlink:href="https://www.w3.org/TR/xsl/#text-align-last">text-align-last</link>
       = <code>'justify'</code> forces the <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_block">fo:block</link> to
+      xlink:href="https://www.w3.org/TR/xsl/#fo_block">fo:block</link> to
       extend to the available width of the current <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_region-body">fo:region-body</link>
       area. The <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
       inserts the necessary amount of content of the specified type defined in
       in <link
-      xlink:href="http://www.w3.org/TR/xsl/#leader-pattern">leader-pattern</link>
+      xlink:href="https://www.w3.org/TR/xsl/#leader-pattern">leader-pattern</link>
       to fill up the gap between its neighbouring components. This principle
       can be extended to multiple objects:</para>
 
@@ -665,11 +665,11 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       </figure>
 
       <para>A <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_leader">fo:leader</link> may
+      xlink:href="https://www.w3.org/TR/xsl/#fo_leader">fo:leader</link> may
       also be used to draw horizontal lines to separate objects. In this case
       there are no neighbouring components within the <quote>current</quote>
       line in which the <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
       appears. This is frequently used to draw a border between
       <code>xsl-region-body</code> and <code>xsl-region-before</code> and/or
       <code>xsl-region-after</code>:</para>
@@ -699,12 +699,12 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       </figure>
 
       <para>Note the empty leader <code>&lt;</code> <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_leader">fo:leader</link>
       <code>/&gt;</code> between the <quote> <code>FO</code> </quote> and the
       <quote>page 5</quote> text node inserting horizontal whitespace to get
       the page number centered to the header's right edge. This is in
       accordance with the <link
-      xlink:href="http://www.w3.org/TR/xsl/#leader-pattern">leader-pattern</link>
+      xlink:href="https://www.w3.org/TR/xsl/#leader-pattern">leader-pattern</link>
       attributes default value <code>space</code>.</para>
     </section>
 
@@ -712,15 +712,15 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       <title>Page numbers</title>
 
       <para>We already saw an example of page numbering via <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_page-number">fo:page-number</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_page-number">fo:page-number</link>
       in <xref linkend="paramHeadFoot"/>. Sometimes a different style for page
       numbering is desired. The default page numbering style may be changed by
       means of the <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
       element's attribute <link
-      xlink:href="http://www.w3.org/TR/xsl/#format">format</link>. For a
+      xlink:href="https://www.w3.org/TR/xsl/#format">format</link>. For a
       closer explanation the <link
-      xlink:href="http://www.w3.org/TR/2007/REC-xslt20-20070123/#convert">W3X
+      xlink:href="https://www.w3.org/TR/2007/REC-xslt20-20070123/#convert">W3X
       XSLT standards documentation</link> may be consulted:</para>
 
       <figure xml:id="pageNumberingRoman">
@@ -835,7 +835,7 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
           <listitem>
             <para>This way of implementing references utilizes features of
             (online) viewers for printable documents. For example PDF viewers
-            like <productname xlink:href="http://www.adobe.com">Adobe's
+            like <productname xlink:href="https://www.adobe.com">Adobe's
             Acrobat reader</productname> or the evince application are able to
             follow hypertext links in a fashion known from HTML browsers. This
             browser feature is based on hypertext capabilities defined in the
@@ -849,24 +849,24 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       physical paper.</para>
 
       <para>We now show the implementation of <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       based page references. As already being discussed for <link
-      xlink:href="http://www.w3.org/TR/xml#id">ID</link> / <link
-      xlink:href="http://www.w3.org/TR/xml#idref">IDREF</link> pairs we need a
+      xlink:href="https://www.w3.org/TR/xml#id">ID</link> / <link
+      xlink:href="https://www.w3.org/TR/xml#idref">IDREF</link> pairs we need a
       link destination (anchor) and a link source. The <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       standard uses the same anchor implementation as in XML for <link
-      xlink:href="http://www.w3.org/TR/xml#id">ID</link> typed attributes:
+      xlink:href="https://www.w3.org/TR/xml#id">ID</link> typed attributes:
       <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       objects <emphasis>may</emphasis> have an attribute <link
-      xlink:href="http://www.w3.org/TR/xsl/#id">id</link> with a document wide
+      xlink:href="https://www.w3.org/TR/xsl/#id">id</link> with a document wide
       unique value. The <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       element <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_page-number-citation">fo:page-number-citation</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_page-number-citation">fo:page-number-citation</link>
       is used to actually create a page reference via its attribute <link
-      xlink:href="http://www.w3.org/TR/xsl/#ref-id">ref-id</link>:</para>
+      xlink:href="https://www.w3.org/TR/xsl/#ref-id">ref-id</link>:</para>
 
       <figure xml:id="refJavaXml">
         <title>Two blocks mutual page referencing each other.</title>
@@ -890,19 +890,19 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       </figure>
 
       <para>NB: Be careful defining <link
-      xlink:href="http://www.w3.org/TR/xsl/#id">id</link> attributes for
+      xlink:href="https://www.w3.org/TR/xsl/#id">id</link> attributes for
       objects being descendants of <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_static-content">fo:static-content</link>
       nodes. Such objects typically appear on multiple pages and are therefore
       no unique anchors. A reference carrying such an id value thus actually
       refers to 1 &lt;= n values on n different pages. Typically a user agent
       will choose the first object of this set when clicking the link. So in
       effect the parent <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_page-sequence">fo:page-sequence</link>
       is chosen as the effective link target.</para>
 
       <para>The element <link
-      xlink:href="http://www.w3.org/TR/xsl/#fo_basic-link">fo:basic-link</link>
+      xlink:href="https://www.w3.org/TR/xsl/#fo_basic-link">fo:basic-link</link>
       creates PDF hypertext links. We extend the previous example:</para>
 
       <figure xml:id="refJavaXmlHyper">
@@ -942,12 +942,12 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
       </mediaobject>
 
       <para>PDF bookmarks are <link
-      xlink:href="http://www.w3.org/TR/2006/REC-xsl11-20061205/#d0e14206">part
+      xlink:href="https://www.w3.org/TR/2006/REC-xsl11-20061205/#d0e14206">part
       of the XSL-FO 1.1</link> Standard. Some <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       processors still continue to use proprietary solutions for bookmark
       creation with respect to the older <abbrev
-      xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+      xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
       1.0 standard. For details of bookmark extensions by
       <orgname>RenderX</orgname>'s processor see <link
       xlink:href="http://www.renderx.com/tutorial.html#PDF_Bookmarks">xep's
@@ -957,15 +957,15 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
 
   <section xml:id="xml2fo">
     <title>Constructing <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     from XML documents</title>
 
     <titleabbrev><abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     from XML</titleabbrev>
 
     <para>So far we have learnt some basic <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     elements. As with HTML we typically generate FO code from other sources
     rather than crafting it by hand. The general picture is:</para>
 
@@ -986,16 +986,16 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
     </figure>
 
     <para>We discussed the <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     standard as an input format for printable output production by a renderer.
     In this way a <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     document is similar to HTML being a format to be rendered by a web browser
     for visual (screen oriented) output production. The transformation from a
     XML source (e.g. a memo document) to <abbrev
-    xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+    xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
     is still missing. As for HTML we may use <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> as a transformation
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> as a transformation
     means. We generate the sender's surname from a memo document
     instance:</para>
 
@@ -1064,20 +1064,20 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
     <orderedlist>
       <listitem>
         <para>The <link
-        xlink:href="http://www.w3.org/TR/2007/REC-xslt20-20070123/#element-stylesheet">xsl_stylesheet</link>
+        xlink:href="https://www.w3.org/TR/2007/REC-xslt20-20070123/#element-stylesheet">xsl_stylesheet</link>
         element contains a namespace definition for the target FO document's
         namespace, namely:</para>
 
         <programlisting language="none">xmlns:xsl="http://www.w3.org/1999/XSL/Transform"</programlisting>
 
         <para>This is required to use elements like <link
-        xlink:href="http://www.w3.org/TR/xsl/#fo_block">fo:block</link>
+        xlink:href="https://www.w3.org/TR/xsl/#fo_block">fo:block</link>
         belonging to the FO namespace.</para>
       </listitem>
 
       <listitem>
         <para>The option value <code>indent="yes"</code> in <link
-        xlink:href="http://www.w3.org/TR/2007/REC-xslt20-20070123/#element-output">xsl_output</link>
+        xlink:href="https://www.w3.org/TR/2007/REC-xslt20-20070123/#element-output">xsl_output</link>
         is usually set to "no" in a production environment to avoid whitespace
         related problems.</para>
       </listitem>
@@ -1112,7 +1112,7 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
         </mediaobject>
 
         <para>When debugging of the intermediate <abbrev
-        xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+        xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
         file is not required both steps may be combined into a single
         call:</para>
 
@@ -1137,7 +1137,7 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
         <qandaentry>
           <question>
             <para>Write a <abbrev
-            xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> script to
+            xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> script to
             generate a starting version <filename
             xlink:href="Sda1/Ref/src/Dom/climbenriched.start.pdf">climbenriched.start.pdf</filename>.</para>
           </question>
@@ -1252,14 +1252,14 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
                 On each page's footer a text <quote>page xx of yy</quote>
                 shall be displayed. This requires the definition of an anchor
                 <code>id</code> on the <abbrev
-                xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+                xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
                 document's last page.</para>
               </listitem>
 
               <listitem>
                 <para>Add PDF bookmarks by using <orgname>XEP</orgname>'s
                 <abbrev
-                xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
+                xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section">FO</abbrev>
                 extensions. This requires the namespace declaration
                 <code>xmlns:rx="http://www.renderx.com/XSL/Extensions"</code>
                 in the XSLT script's header.</para>
diff --git a/Doc/Sda1/jdbc.xml b/Doc/Sda1/jdbc.xml
index 189fbdcfb..57fc8504e 100644
--- a/Doc/Sda1/jdbc.xml
+++ b/Doc/Sda1/jdbc.xml
@@ -74,7 +74,7 @@
     processes mentioned here may as well be started in disjoint address
     spaces. In fact we might even run two entirely different applications
     implemented in different programming languages like <abbrev
-    xlink:href="http://www.php.net">PHP</abbrev>.</para>
+    xlink:href="https://secure.php.net">PHP</abbrev>.</para>
 
     <para>It is important to mention that the two arrows  <quote>save</quote>
     and <quote>load</quote> thus typically denote a communication across
@@ -123,11 +123,11 @@
 
       <para>We may add an additional layer. Web applications are typically
       being build on top of an application server (<productname
-      xlink:href="http://www.ibm.com/software/de/websphere/">WebSphere</productname>,
+      xlink:href="https://www.ibm.com/software/de/websphere/">WebSphere</productname>,
       <productname
-      xlink:href="http://glassfish.java.net">Glassfish</productname>,
+      xlink:href="https://glassfish.java.net">Glassfish</productname>,
       <productname
-      xlink:href="http://www.jboss.org/jbossas">Jboss</productname>,...)
+      xlink:href="https://www.jboss.org/jbossas">Jboss</productname>,...)
       providing additional services:</para>
 
       <figure xml:id="jdbcFourTier">
@@ -154,7 +154,7 @@
           xlink:href="www.ibm.com/software/data/db2">DB2</productname>,
           <productname
           xlink:href="http://www-01.ibm.com/software/data/informix">Informix</productname>,
-          <productname xlink:href="http://www.mysql.com">Mysql</productname>
+          <productname xlink:href="https://www.mysql.com">Mysql</productname>
           etc. This information is needed because of vendor dependent
           <trademark
           xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
@@ -163,7 +163,7 @@
 
         <listitem>
           <para>The server's <link
-          xlink:href="http://en.wikipedia.org/wiki/Domain_Name_System">DNS</link>
+          xlink:href="https://en.wikipedia.org/wiki/Domain_Name_System">DNS</link>
           name or IP number</para>
         </listitem>
 
@@ -187,7 +187,7 @@
       <trademark
       xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
       <link
-      xlink:href="http://en.wikipedia.org/wiki/Uniform_Resource_Locator">URL</link>.
+      xlink:href="https://en.wikipedia.org/wiki/Uniform_Resource_Locator">URL</link>.
       We consider a typical example corresponding to the previous parameter
       list:</para>
 
@@ -207,12 +207,12 @@
       xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
       URL example closely resembles other types of URL strings as being
       defined in <uri
-      xlink:href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</uri>.
+      xlink:href="https://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</uri>.
       Look for <code>opaque_part</code> to understand the second
       <quote>:</quote> in the protocol definition part of a <trademark
       xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
       URL. Common example for <abbrev
-      xlink:href="http://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>s
+      xlink:href="https://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>s
       are:</para>
 
       <itemizedlist>
@@ -231,7 +231,7 @@
 
       <para>We notice the explicit mentioning of a port number 8080 in the
       second example; The default <abbrev
-      xlink:href="http://www.w3.org/Protocols">http</abbrev> protocol port
+      xlink:href="https://www.w3.org/Protocols">http</abbrev> protocol port
       number is 80. So if a web server accepts connections at port 80 we do
       not have to specify this value. A web browser will automatically use
       this default port.</para>
@@ -244,7 +244,7 @@
       part.</para>
 
       <para>In contrast to <abbrev
-      xlink:href="http://www.w3.org/Protocols">http</abbrev> no standard ports
+      xlink:href="https://www.w3.org/Protocols">http</abbrev> no standard ports
       are <quote>officially</quote> assigned for <trademark
       xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
       protocol variants. Due to vendor specific implementations this does not
@@ -475,7 +475,7 @@
 
       <note>
         <para>It is worth mentioning that the <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> and other <xref
+        xlink:href="https://www.mysql.com">Mysql</productname> and other <xref
         linkend="glo_JDBC"/> driver implementations do not have to be
         available at compile time. <trademark
         xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
@@ -495,39 +495,39 @@
             <itemizedlist>
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#createStatement()">createStatement()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#createStatement()">createStatement()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#setAutoCommit(boolean)">setAutoCommit()</link>,
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#setAutoCommit(boolean)">setAutoCommit()</link>,
                 <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#getAutoCommit()">getAutoCommit()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#getAutoCommit()">getAutoCommit()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#getWarnings()">getWarnings()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#getWarnings()">getWarnings()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#isClosed()">isClosed()</link>,
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#isClosed()">isClosed()</link>,
                 <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#isValid(int)">isValid(int
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#isValid(int)">isValid(int
                 timeout)</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#rollback()">rollback()</link>,
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#rollback()">rollback()</link>,
                 <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#commit()">commit()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit()">commit()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#close()">close()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#close()">close()</link></para>
               </listitem>
             </itemizedlist>
           </glossdef>
@@ -540,25 +540,25 @@
             <itemizedlist>
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#executeUpdate(java.lang.String)">executeUpdate(String
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#executeUpdate(java.lang.String)">executeUpdate(String
                 sql)</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#getConnection()">getConnection()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#getConnection()">getConnection()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#getResultSet()">getResultSet()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#getResultSet()">getResultSet()</link></para>
               </listitem>
 
               <listitem>
                 <para><link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#close()">close()</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#close()">close()</link>
                 and <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#isClosed()">isClosed()</link></para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#isClosed()">isClosed()</link></para>
               </listitem>
             </itemizedlist>
           </glossdef>
@@ -574,11 +574,11 @@
           <qandaentry>
             <question>
               <para><link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#setAutoCommit(boolean)">How
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#setAutoCommit(boolean)">How
               does the method setAutoCommit()</link> relate to <link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#commit()">commit()</link>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit()">commit()</link>
               and <link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#rollback()">rollback()</link>?</para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#rollback()">rollback()</link>?</para>
             </question>
 
             <answer>
@@ -604,12 +604,12 @@
                   <orderedlist numeration="loweralpha">
                     <listitem>
                       <para><link
-                      xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#commit()">commit()</link></para>
+                      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit()">commit()</link></para>
                     </listitem>
 
                     <listitem>
                       <para><link
-                      xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#rollback()">rollback()</link></para>
+                      xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#rollback()">rollback()</link></para>
                     </listitem>
 
                     <listitem>
@@ -621,9 +621,9 @@
 
                   <note>
                     <para>Both <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#commit()">commit()</link>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit()">commit()</link>
                     and <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#rollback()">rollback()</link>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#rollback()">rollback()</link>
                     are being initiated from the client side whereas aborting
                     a transaction happens on behalf of the database
                     server.</para>
@@ -644,7 +644,7 @@
           <qandaentry>
             <question>
               <para>Why is it important to call the <link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#close()">close()</link>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#close()">close()</link>
               method for <classname
               xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html">Connection</classname>
               and / or <classname
@@ -843,7 +843,7 @@ public someClass {
               driver registers itself at the
               <classname>java.sql.DriverManager</classname> singleton
               instance. For this purpose the standard defined the method <link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/DriverManager.html#registerDriver(java.sql.Driver)">registerDriver(Driver)</link>.
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/DriverManager.html#registerDriver(java.sql.Driver)">registerDriver(Driver)</link>.
               On success the <classname>java.sql.DriverManager</classname>
               adds the driver to an internal dictionary:</para>
 
@@ -878,7 +878,7 @@ public someClass {
               </informaltable>
 
               <para>So whenever the method <link
-              xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/DriverManager.html#getConnection(java.lang.String,%20java.lang.String,%20java.lang.String)">getConnection()</link>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/DriverManager.html#getConnection(java.lang.String,%20java.lang.String,%20java.lang.String)">getConnection()</link>
               is being called the
               <classname>java.sql.DriverManager</classname> will scan the
               <trademark
@@ -939,7 +939,7 @@ public someClass {
       <qandaset defaultlabel="qanda" xml:id="quandaentry_WritProps">
         <title>Moving <trademark
         xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
-        <abbrev xlink:href="http://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>
+        <abbrev xlink:href="https://www.ietf.org/rfc/rfc1738.txt">URL</abbrev>
         and credentials to a property file</title>
 
         <qandadiv>
@@ -1106,9 +1106,9 @@ public class SimpleInsert {
               an <quote>all or nothing</quote> fashion by grouping all
               <code>INSERT</code>s into a single transaction. You may want to
               read about <link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#setAutoCommit-boolean-">setAutoCommit(boolean
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#setAutoCommit-boolean-">setAutoCommit(boolean
               autoCommit)</link> and <link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit--">commit()</link>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#commit--">commit()</link>
               for this purpose.</para>
             </question>
 
@@ -1640,7 +1640,7 @@ public class ViewMockup implements PersistView {
                   the GUI part shall have no reference to <xref
                   linkend="glo_SQL"/> / <xref linkend="glo_JDBC"/> and your
                   database part shall have no <productname
-                  xlink:href="http://vaadin.com">Vaadin</productname> GUI
+                  xlink:href="https://vaadin.com">Vaadin</productname> GUI
                   related references.</para>
                 </listitem>
               </orderedlist>
@@ -1775,9 +1775,9 @@ public class ViewMockup implements PersistView {
         <para>We demonstrate a possible attack by analyzing the network
         traffic between our application shown in <xref
         linkend="figJdbcSimpleWrite"/> and the <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> database server.
+        xlink:href="https://www.mysql.com">Mysql</productname> database server.
         Prior to starting the application we set up <productname
-        xlink:href="http://www.wireshark.org">Wireshark</productname> for
+        xlink:href="https://www.wireshark.org">Wireshark</productname> for
         filtered capturing:</para>
 
         <itemizedlist>
@@ -1789,7 +1789,7 @@ public class ViewMockup implements PersistView {
 
           <listitem>
             <para>Filtering packets if not of type <acronym
-            xlink:href="http://en.wikipedia.org/wiki/Transmission_Control_Protocol">TCP</acronym>
+            xlink:href="https://en.wikipedia.org/wiki/Transmission_Control_Protocol">TCP</acronym>
             and having port number 3306</para>
           </listitem>
         </itemizedlist>
@@ -1826,16 +1826,16 @@ public class ViewMockup implements PersistView {
         code in <xref linkend="figJdbcSimpleWrite"/> contains the password
         <quote><varname>XYZ</varname></quote> in clear text. But even using
         the search function of <productname
-        xlink:href="http://www.wireshark.org">Wireshark</productname> does not
+        xlink:href="https://www.wireshark.org">Wireshark</productname> does not
         show any such string within the above capture. The <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> documentation
+        xlink:href="https://www.mysql.com">Mysql</productname> documentation
         however <link
-        xlink:href="http://dev.mysql.com/doc/refman/5.0/en/security-against-attack.html">reveals</link>
+        xlink:href="https://dev.mysql.com/doc/refman/5.0/en/security-against-attack.html">reveals</link>
         that everything but the password is transmitted in clear text. So all
         we might identify is a hash of <code>XYZ</code>.</para>
 
         <para>So regarding our (current) <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> implementation
+        xlink:href="https://www.mysql.com">Mysql</productname> implementation
         the impact of this attack type is somewhat limited but still severe:
         All data being transmitted between client and server may be disclosed.
         This typically comprises sensible data as well. Possible
@@ -1845,14 +1845,14 @@ public class ViewMockup implements PersistView {
           <listitem>
             <para>Create an encrypted tunnel between client and server like
             e.g. <link
-            xlink:href="http://www.debianadmin.com/howto-use-ssh-local-and-remote-port-forwarding.html">ssh
+            xlink:href="https://www.debianadmin.com/howto-use-ssh-local-and-remote-port-forwarding.html">ssh
             port forwarding</link> or <link
-            xlink:href="http://de.wikipedia.org/wiki/Virtual_Private_Network">VPN</link>.</para>
+            xlink:href="https://en.wikipedia.org/wiki/Virtual_private_network">VPN</link>.</para>
           </listitem>
 
           <listitem>
             <para>Many database vendors <link
-            xlink:href="http://dev.mysql.com/doc/refman/5.1/de/connector-j-reference-using-ssl.html">supply
+            xlink:href="https://dev.mysql.com/doc/refman/5.1/de/connector-j-reference-using-ssl.html">supply
             SSL</link> or similar <trademark
             xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
             protocol encryption extensions. This requires additional
@@ -1929,7 +1929,7 @@ public class ViewMockup implements PersistView {
         </mediaobject>
 
         <para>Lessons learned? Current achievements <link
-        xlink:href="http://cwe.mitre.org/top25/#Listing">continue</link> to be
+        xlink:href="https://cwe.mitre.org/top25/#Listing">continue</link> to be
         <link
         xlink:href="https://www.cvedetails.com/vulnerability-search.php?f=1&amp;vendor=&amp;product=&amp;cveid=&amp;cweid=&amp;cvssscoremin=&amp;cvssscoremax=&amp;psy=&amp;psm=&amp;pey=&amp;pem=&amp;usy=&amp;usm=&amp;uey=&amp;uem=&amp;opsqli=1">questionable</link>.</para>
 
@@ -1947,7 +1947,7 @@ public class ViewMockup implements PersistView {
                 <orderedlist>
                   <listitem>
                     <para>The <productname
-                    xlink:href="http://www.mysql.com">Mysql</productname>
+                    xlink:href="https://www.mysql.com">Mysql</productname>
                     <trademark
                     xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
                     driver implementation already provides precautions to
@@ -1960,7 +1960,7 @@ public class ViewMockup implements PersistView {
 
                     <para>In order to execute these so called multi user
                     queries we explicitly have to enable a <productname
-                    xlink:href="http://www.mysql.com">Mysql</productname>
+                    xlink:href="https://www.mysql.com">Mysql</productname>
                     property. This may be achieved by extending our <trademark
                     xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
                     URL:</para>
@@ -1969,9 +1969,9 @@ public class ViewMockup implements PersistView {
                         role="bold">allowMultiQueries=true</emphasis></programlisting>
 
                     <para>The <productname
-                    xlink:href="http://www.mysql.com">Mysql</productname>
+                    xlink:href="https://www.mysql.com">Mysql</productname>
                     manual <link
-                    xlink:href="http://dev.mysql.com/doc/refman/5.1/en/connector-j-reference-configuration-properties.html">contains
+                    xlink:href="https://dev.mysql.com/doc/refman/5.1/en/connector-j-reference-configuration-properties.html">contains
                     </link>a remark regarding this parameter:</para>
 
                     <remark>Notice that this has the potential for SQL
@@ -2330,7 +2330,7 @@ public class RegexpPrimer {
 
                           <para>A concise definition of an email's syntax is
                           being given in <link
-                          xlink:href="http://tools.ietf.org/html/rfc5322#section-3.4.1">RFC5322</link>.
+                          xlink:href="https://tools.ietf.org/html/rfc5322#section-3.4.1">RFC5322</link>.
                           Its implementation is beyond scope of the current
                           lecture. Moreover it is questionable whether E-mail
                           clients and mail transfer agents implement strict
@@ -2829,10 +2829,10 @@ public class SimpleRead {
 
         <callout arearefs="listingJdbcRead-2-co" xml:id="listingJdbcRead-2">
           <para>Calling <link
-          xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#next()">next()</link>
+          xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#next()">next()</link>
           prior to actually accessing data on the client side is mandatory!
           The <link
-          xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#next()">next()</link>
+          xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#next()">next()</link>
           method places the internal iterator to the first element of our
           dataset if not empty. Follow the link address and **read** the
           documentation.</para>
@@ -2843,7 +2843,7 @@ public class SimpleRead {
           <para>The access methods have to be chosen according to matching
           types. An overview of database/<xref linkend="glo_Java"/> type
           mappings is being given in <uri
-          xlink:href="http://docs.oracle.com/javase/1.3/docs/guide/jdbc/getstart/mapping.html">http://docs.oracle.com/javase/1.3/docs/guide/jdbc/getstart/mapping.html</uri>.</para>
+          xlink:href="https://docs.oracle.com/javase/1.3/docs/guide/jdbc/getstart/mapping.html">https://docs.oracle.com/javase/1.3/docs/guide/jdbc/getstart/mapping.html</uri>.</para>
         </callout>
       </calloutlist>
 
@@ -2859,19 +2859,19 @@ public class SimpleRead {
               <question>
                 <para>Apart from type mappings the <xref linkend="glo_JDBC"/>
                 access methods like <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#getString(int)">getString()</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#getString(int)">getString()</link>
                 may also be used for type conversion. Modify <xref
                 linkend="listingJdbcRead"/> by:</para>
 
                 <itemizedlist>
                   <listitem>
                     <para>Read the database attribute <code>id</code> by <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#getString(java.lang.String)">getString(String)</link>.</para>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#getString(java.lang.String)">getString(String)</link>.</para>
                   </listitem>
 
                   <listitem>
                     <para>Read the database attribute nickname by <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#getInt(java.lang.String)">getInt(String)</link>.</para>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#getInt(java.lang.String)">getInt(String)</link>.</para>
                   </listitem>
                 </itemizedlist>
 
@@ -2898,7 +2898,7 @@ while (data.next()) {
                   <callout arearefs="jdbcReadWrongType-1-co"
                            xml:id="jdbcReadWrongType-1">
                     <para>Calling <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#getString(int)">getString()</link>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#getString(int)">getString()</link>
                     for a database attribute of type INTEGER does not cause
                     any trouble: The value gets silently converted to a string
                     value.</para>
@@ -2907,7 +2907,7 @@ while (data.next()) {
                   <callout arearefs="jdbcReadWrongType-2-co"
                            xml:id="jdbcReadWrongType-2">
                     <para>Calling <link
-                    xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#getInt(java.lang.String)">getInt(String)</link>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#getInt(java.lang.String)">getInt(String)</link>
                     for the database field of type CHAR yields an (expected)
                     Exception:</para>
                   </callout>
@@ -2931,7 +2931,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
                 <para>Conclusion: The <xref linkend="glo_JDBC"/> driver
                 performs a conversion from a string type to an integer similar
                 like the <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html#parseInt(java.lang.String)">parseInt(String)</link>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html#parseInt(java.lang.String)">parseInt(String)</link>
                 method.</para>
 
                 <para>The next series of exercises aims on a more powerful
@@ -2977,7 +2977,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
                 values.</para>
 
                 <para>Hint: Read the documentation of <link
-                xlink:href="http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html#wasNull()">wasNull()</link>.</para>
+                xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html#wasNull()">wasNull()</link>.</para>
               </question>
 
               <answer>
@@ -3089,7 +3089,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
                 on the bottom of the page.</para>
 
                 <para>With respect to an implementation <uri
-                xlink:href="http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java#11038230">http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java</uri>
+                xlink:href="https://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java#11038230">http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java</uri>
                 provides a simple example for:</para>
 
                 <itemizedlist>
@@ -3105,7 +3105,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
                 </itemizedlist>
 
                 <para>You may as well use <uri
-                xlink:href="http://crackstation.net/hashing-security.htm#javasourcecode">http://crackstation.net/hashing-security.htm#javasourcecode</uri>
+                xlink:href="https://crackstation.net/hashing-security.htm#javasourcecode">http://crackstation.net/hashing-security.htm#javasourcecode</uri>
                 as a starting point. This example works standalone without
                 needing an external library. Note: This example produces
                 different (incompatible) hash values.</para>
@@ -3131,7 +3131,7 @@ INSERT INTO Friends VALUES (1, <emphasis role="bold">'31'</emphasis>, '1991-10-1
                 <para>Starting from <quote
                 xlink:href="https://crackstation.net/hashing-security.htm">Salted
                 Password Hashing - Doing it Right</quote> and <uri
-                xlink:href="http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java#11038230">http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java</uri>
+                xlink:href="https://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java#11038230">http://stackoverflow.com/questions/2860943/suggestions-for-library-to-hash-passwords-in-java</uri>
                 we create a slightly modified class
                 <classname>HashProvider</classname>:</para>
 
@@ -3647,7 +3647,7 @@ INSERT INTO Product VALUES('w-124', 110.40);
                 <para>Then extend <xref linkend="xml2xml"/> by introducing a
                 new method <methodname>addPrices(final Document
                 catalog)</methodname> which adds prices to the <acronym
-                xlink:href="http://www.w3.org/DOM">DOM</acronym> tree
+                xlink:href="https://www.w3.org/DOM">DOM</acronym> tree
                 accordingly.</para>
               </question>
 
@@ -3656,7 +3656,7 @@ INSERT INTO Product VALUES('w-124', 110.40);
                 linkend="xml2xml"/> is represented by a method
                 <methodname>de.hdm_stuttgart.mi.sda1.rdbmsxml2html.XmlRdbms2Html.addPrices()</methodname>.
                 This method modifies the <acronym
-                xlink:href="http://www.w3.org/DOM">DOM</acronym> input tree
+                xlink:href="https://www.w3.org/DOM">DOM</acronym> input tree
                 prior to applying the XSL by inserting data received from the
                 RDBMS:</para>
 
diff --git a/Doc/Sda1/jpaintro.xml b/Doc/Sda1/jpaintro.xml
index 97526fed5..042ea7c4a 100644
--- a/Doc/Sda1/jpaintro.xml
+++ b/Doc/Sda1/jpaintro.xml
@@ -38,7 +38,7 @@
                   <parameter>hibernate.hbm2ddl.auto</parameter> causes table
                   re-creation on every new invocation and may be adjusted
                   according to <quote
-                  xlink:href="http://docs.jboss.org/hibernate/orm/5.0/manual/en-US/html/ch03.html#configuration-misc-properties">Miscellaneous
+                  xlink:href="https://docs.jboss.org/hibernate/orm/5.0/manual/en-US/html/ch03.html#configuration-misc-properties">Miscellaneous
                   Properties</quote>.</para>
                 </glossdef>
               </glossentry>
@@ -141,7 +141,7 @@
 
                     <listitem>
                       <para>Read the <link
-                      xlink:href="http://www.objectdb.com/java/jpa/query/api">TypedQuery
+                      xlink:href="https://www.objectdb.com/java/jpa/query/api">TypedQuery
                       section</link> and add an appropriate <code>... where
                       name like 'S%'</code> clause.</para>
                     </listitem>
diff --git a/Doc/Sda1/prerequisites.xml b/Doc/Sda1/prerequisites.xml
index a3b81bbf7..8cfa95eb5 100644
--- a/Doc/Sda1/prerequisites.xml
+++ b/Doc/Sda1/prerequisites.xml
@@ -20,13 +20,13 @@
           <itemizedlist>
             <listitem>
               <para><xref linkend="bib_fawcett2012"/> possibly <link
-              xlink:href="http://proquest.safaribooksonline.com/book/web-development/xml/9781118239483">accessible
+              xlink:href="https://proquest.safaribooksonline.com/book/web-development/xml/9781118239483">accessible
               online</link>.</para>
             </listitem>
 
             <listitem>
               <para><xref linkend="bib_Walmsley02"/> possibly <link
-              xlink:href="http://proquest.safaribooksonline.com/book/web-development/xml/9780132886741">accessible
+              xlink:href="https://proquest.safaribooksonline.com/book/web-development/xml/9780132886741">accessible
               online</link>.</para>
             </listitem>
           </itemizedlist>
@@ -111,9 +111,9 @@
 
           <caution>
             <para>The license key's <abbrev
-            xlink:href="http://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>
+            xlink:href="https://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>
             URL is only accessible from within the <orgname
-            xlink:href="http://www.hdm-stuttgart.de">HdM</orgname> network.
+            xlink:href="https://www.hdm-stuttgart.de">HdM</orgname> network.
             External access requires <link
             xlink:href="https://wiki.mi.hdm-stuttgart.de/wiki/VPN">Vpn
             activation</link>.</para>
@@ -129,7 +129,7 @@
           xlink:href="https://version.mi.hdm-stuttgart.de/git/GoikLectures">https://version.mi.hdm-stuttgart.de/git/GoikLectures</link>.</para>
 
           <para>You may simply execute <quote><command
-          xlink:href="http://git-scm.com/">git</command>
+          xlink:href="https://git-scm.com">git</command>
           <option>clone</option>
           <option>https://version.mi.hdm-stuttgart.de/git/GoikLectures</option>
           <option>.</option></quote> to check out the master tree.</para>
@@ -205,7 +205,7 @@
       <para>The Eclipse IDE will be used as the primary coding tool especially
       for <xref linkend="glo_Java"/> and XML. Users may use different tools
       like e.g. <productname
-      xlink:href="http://netbeans.org">Netbeans</productname> or <productname
+      xlink:href="https://netbeans.org">Netbeans</productname> or <productname
       xlink:href="http://www.altova.com/de/xmlspy.html">XML-Spy</productname>.
       There are however some caveats:</para>
 
@@ -239,7 +239,7 @@
       <para>Due to Oracle's (end-user unfriendly) licensing policy you may
       have to install this component manually. For <productname
       xlink:href="http://www.ubuntu.com">Ubuntu</productname> and <productname
-      xlink:href="http://www.debian.org">Debian</productname> systems a
+      xlink:href="https://www.debian.org">Debian</productname> systems a
       standard (package manager compatible) procedure is being described at
       <uri
       xlink:href="http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html">http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html</uri>.
@@ -266,7 +266,7 @@ Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
 Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)</programlisting>
 
       <para>The Eclipse IDE comes <link
-      xlink:href="http://www.eclipse.org/downloads">with various
+      xlink:href="https://www.eclipse.org/downloads">with various
       flavours</link> depending on which plugins are already being shipped.
       For our purposes <quote><productname>Eclipse IDE for Java EE
       Developers</productname></quote> is appropriate. Remember to download
@@ -274,7 +274,7 @@ Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)</programlisting>
       xlink:href="http://www.oracle.com/technetwork/java/javase/jdk-7-readme-429198.html">JDK</productname>.</para>
 
       <para>Follow <uri
-      xlink:href="http://askubuntu.com/questions/26632/how-to-install-eclipse#answer-145018">http://askubuntu.com/questions/26632/how-to-install-eclipse#answer-145018</uri>
+      xlink:href="https://askubuntu.com/questions/26632/how-to-install-eclipse#answer-145018">http://askubuntu.com/questions/26632/how-to-install-eclipse#answer-145018</uri>
       to install eclipse on your system.</para>
     </section>
 
@@ -302,11 +302,11 @@ Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)</programlisting>
 
     <section xml:id="mysql">
       <title><productname
-      xlink:href="http://www.mysql.com">Mysql</productname> Database
+      xlink:href="https://www.mysql.com">Mysql</productname> Database
       components</title>
 
       <para>We start by installing the <productname
-      xlink:href="http://www.mysql.com">Mysql</productname> server:</para>
+      xlink:href="https://www.mysql.com">Mysql</productname> server:</para>
 
       <programlisting language="none">root@goiki:~# aptitude install mysql-server
 The following NEW packages will be installed:
@@ -318,7 +318,7 @@ Do you want to continue? [Y/n/?]</programlisting>
 
       <para>Hit <keycap>Y - return</keycap> to start. During the installation
       you will be asked for the <productname
-      xlink:href="http://www.mysql.com">Mysql</productname> servers
+      xlink:href="https://www.mysql.com">Mysql</productname> servers
       <quote>root</quote> (Administrator) password:</para>
 
       <programlisting language="none">Package configuration                                                                              
@@ -383,10 +383,10 @@ mysql&gt; FLUSH PRIVILEGES;</programlisting>
 
       <para>The next step is optional. The <productname
       xlink:href="http://www.ubuntu.com">Ubuntu</productname> <productname
-      xlink:href="http://www.mysql.com">Mysql</productname> server default
+      xlink:href="https://www.mysql.com">Mysql</productname> server default
       configuration allows connections only via <varname>loopback</varname>
       interface i.e. <varname>localhost</varname>. If you want your
-      <productname xlink:href="http://www.mysql.com">Mysql</productname>
+      <productname xlink:href="https://www.mysql.com">Mysql</productname>
       server to listen to the external network interface comment out the
       bind-address parameter in <filename>/etc/mysql/my.cnf</filename>:</para>
 
@@ -397,7 +397,7 @@ mysql&gt; FLUSH PRIVILEGES;</programlisting>
       <para>Since we are dealing with <xref linkend="glo_Java"/> a <trademark
       xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
       driver is needed to connect Applications to our <productname
-      xlink:href="http://www.mysql.com">Mysql</productname> server:</para>
+      xlink:href="https://www.mysql.com">Mysql</productname> server:</para>
 
       <programlisting language="none">root@goiki:~# aptitude install libmysql-java</programlisting>
 
@@ -437,7 +437,7 @@ lrwxrwxrwx 1 ... 2011 <emphasis role="bold">mysql.jar -&gt; mysql-connector-java
 
                   <listitem>
                     <para>A unique <link
-                    xlink:href="http://en.wikipedia.org/wiki/List_of_airline_codes">ICAO
+                    xlink:href="https://en.wikipedia.org/wiki/List_of_airline_codes">ICAO
                     abbreviation</link>.</para>
                   </listitem>
                 </itemizedlist>
@@ -548,7 +548,7 @@ CREATE TABLE Flight (
 
     <section xml:id="toolingConfigJdbc">
       <title>Configuring and using the <link
-      xlink:href="http://www.eclipse.org/datatools">Eclipse database
+      xlink:href="https://www.eclipse.org/datatools">Eclipse database
       development</link> plugin</title>
 
       <para>For some basic SQL communications the Eclipse environment offers a
@@ -562,7 +562,7 @@ CREATE TABLE Flight (
         <title>Adding a <trademark
         xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
         Driver for <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> to the database
+        xlink:href="https://www.mysql.com">Mysql</productname> to the database
         plugin.</title>
 
         <mediaobject>
@@ -587,7 +587,7 @@ CREATE TABLE Flight (
         <title>Configuring a <trademark
         xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
         connection to a (local) <productname
-        xlink:href="http://www.mysql.com">Mysql</productname> database
+        xlink:href="https://www.mysql.com">Mysql</productname> database
         server.</title>
 
         <mediaobject>
diff --git a/Doc/Sda1/sax.xml b/Doc/Sda1/sax.xml
index 36941896c..8f7b26453 100644
--- a/Doc/Sda1/sax.xml
+++ b/Doc/Sda1/sax.xml
@@ -14,7 +14,7 @@
     <itemizedlist>
       <listitem>
         <para><link
-        xlink:href="http://www.ibm.com/developerworks/xml/tutorials/x-usax/x-usax.html">Understanding
+        xlink:href="https://www.ibm.com/developerworks/xml/tutorials/x-usax/x-usax.html">Understanding
         SAX</link></para>
       </listitem>
 
@@ -140,7 +140,7 @@ INSERT INTO Product VALUES('<emphasis role="bold">9921</emphasis>', 121.50)</pro
     xlink:href="https://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC</trademark>
     for database access. But how do we actually read and parse a XML file?
     Sticking to the <xref linkend="glo_Java"/> standard we might use a <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/java/io/FileInputStream.html">FileInputStream</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html">FileInputStream</link>
     instance to read from <code>catalog.xml</code> and write a XML parser by
     ourself. Fortunately <orgname>SUN</orgname>'s <trademark
     xlink:href="http://www.oracle.com/technetwork/java/javase">JDK</trademark>
@@ -152,8 +152,8 @@ INSERT INTO Product VALUES('<emphasis role="bold">9921</emphasis>', 121.50)</pro
     also includes a corresponding parser implementation. In addition there are
     third party <acronym xlink:href="http://www.saxproject.org">SAX</acronym>
     parser implementations available like <productname
-    xlink:href="http://xerces.apache.org">Xerces</productname> from the
-    <orgname xlink:href="http://www.apache.org">Apache
+    xlink:href="https://xerces.apache.org">Xerces</productname> from the
+    <orgname xlink:href="https://www.apache.org">Apache
     Foundation</orgname>.</para>
 
     <para>The <acronym xlink:href="http://www.saxproject.org">SAX</acronym>
@@ -521,8 +521,8 @@ Closing Document
     content is due to whitespace being located between elements. For example a
     newline appears between the the <tag class="starttag">catalog</tag> and
     the first <tag class="starttag">item</tag> element. The parser
-    encapsulates this whitespace in a call to the <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/ContentHandler.html#characters(char[],%20int,%20int)">characters</link>
+    encapsulates this whitespace in a call to the <methodname
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/ContentHandler.html#characters-char:A-int-int-">characters()</methodname>
     method. In an application this call will typically be ignored. XML
     document instances in a professional context will typically not contain
     any newline characters at all. Instead the whole document is represented
@@ -551,8 +551,8 @@ Closing Document
     The second content <code>200W Stereo Amplifier</code> and the third
     content <code>Earphone</code> both fit in the second buffer. Subsequent
     content may require further buffer allocations. Such a strategy minimizes
-    the number of time consuming <code>new </code> <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html">String</link>
+    the number of time consuming <code>new </code> <classname
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html">String</classname>
     <code>(...)</code> constructor calls being necessary for the more
     convenient API variant <code>characters(String s)</code>.</para>
   </section>
@@ -567,14 +567,14 @@ Closing Document
     <itemizedlist>
       <listitem>
         <para>The error handling is very sparse. It completely relies on
-        exceptions being thrown by classes like <link
-        xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/SAXException.html">SAXException</link>
+        exceptions being thrown by classes like <classname
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/SAXException.html">SAXException</classname>
         which frequently do not supply meaningful error information.</para>
       </listitem>
 
       <listitem>
         <para>The application is not aware of namespaces. Thus reading e.g.
-        <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> document
+        <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> document
         instances will not allow to distinguish between elements from
         different namespaces like HTML.</para>
       </listitem>
@@ -589,11 +589,11 @@ Closing Document
     xlink:href="http://www.saxproject.org">SAX</acronym> parsing process.
     <acronym xlink:href="http://www.saxproject.org">SAX</acronym> offers an
     interface <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/XMLReader.html">XmlReader</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/XMLReader.html">XmlReader</link>
     to conveniently <emphasis>register</emphasis> event- and error handler
     instances independently instead of passing both interfaces as a single
     argument to the <link
-    xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/parsers/SAXParser.html#parse(java.lang.String,%20org.xml.sax.helpers.DefaultHandler)">parse</link>
+    xlink:href="https://docs.oracle.com/javase/8/docs/api/javax/xml/parsers/SAXParser.html#parse-java.io.File-org.xml.sax.helpers.DefaultHandler-">parse()</link>
     method. We first code an error handler class by implementing the interface
     <classname>org.xml.sax.ErrorHandler</classname> being part of the <acronym
     xlink:href="http://www.saxproject.org">SAX</acronym> API:</para>
@@ -735,7 +735,7 @@ public class ElementCount {
             class="starttag">item</tag> element. The parser does not yet show
             these attribute keys and their corresponding values. Read the
             documentation for <classname
-            xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/Attributes.html">org.xml.sax.Attributes</classname>
+            xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/Attributes.html">org.xml.sax.Attributes</classname>
             and extend the given code to use it.</para>
 
             <para>You should start from the <xref linkend="glo_MIB"/> Maven
@@ -1288,7 +1288,7 @@ Document contains 2 inline &lt;img&gt; elements.</programlisting>
     <variablelist>
       <varlistentry>
         <term><link
-        xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/SAXNotRecognizedException.html">SAXNotRecognizedException</link></term>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/SAXNotRecognizedException.html">SAXNotRecognizedException</link></term>
 
         <listitem>
           <para>The feature is not known to the parser.</para>
@@ -1297,7 +1297,7 @@ Document contains 2 inline &lt;img&gt; elements.</programlisting>
 
       <varlistentry>
         <term><link
-        xlink:href="http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/SAXNotSupportedException.html">SAXNotSupportedException</link></term>
+        xlink:href="https://docs.oracle.com/javase/8/docs/api/org/xml/sax/SAXNotSupportedException.html">SAXNotSupportedException</link></term>
 
         <listitem>
           <para>The feature is known to the parser but the parser does not
@@ -1308,7 +1308,7 @@ Document contains 2 inline &lt;img&gt; elements.</programlisting>
     </variablelist>
 
     <para>The <productname
-    xlink:href="http://projects.apache.org/projects/xml_commons_resolver.html">xml-commons
+    xlink:href="https://projects.apache.org/projects/xml_commons_resolver.html">xml-commons
     resolver project </productname>offers an implementation being able to
     process various catalog file formats. Maven based project allow the
     corresponding library import by adding the following dependency:</para>
@@ -1320,7 +1320,7 @@ Document contains 2 inline &lt;img&gt; elements.</programlisting>
 &lt;/dependency&gt;</programlisting>
 
     <para>We need a properties file <link
-    xlink:href="http://xerces.apache.org/xml-commons/components/resolver/tips.html">CatalogManager.properties</link>
+    xlink:href="https://xerces.apache.org/xml-commons/components/resolver/tips.html">CatalogManager.properties</link>
     defining XML catalogs to be used and additional parameters:</para>
 
     <programlisting language="none"># Catalogs are relative to this properties file
diff --git a/Doc/Sda1/schema.xml b/Doc/Sda1/schema.xml
index c38e7afa4..e7d18682d 100644
--- a/Doc/Sda1/schema.xml
+++ b/Doc/Sda1/schema.xml
@@ -183,14 +183,14 @@
               version="1.0" encoding="UTF-8"?&gt;</code></emphasis> mandatory
               for a file to become a well formed XML document? Find the
               corresponding passage in the <link
-              xlink:href="http://www.w3.org/TR/2008/REC-xml-20081126">XML 1.0
+              xlink:href="https://www.w3.org/TR/2008/REC-xml-20081126">XML 1.0
               standard reference document</link> and explain your
               answer.</para>
             </question>
 
             <answer>
               <para>The <link
-              xlink:href="http://www.w3.org/TR/2008/REC-xml-20081126/#sec-prolog-dtd">Prolog
+              xlink:href="https://www.w3.org/TR/2008/REC-xml-20081126/#sec-prolog-dtd">Prolog
               and Document Type Declaration</link> section defines <emphasis
               role="bold"><code>&lt;?xml version="1.0" ...
               ?&gt;</code></emphasis> defines this header as being optional
@@ -217,7 +217,7 @@
               different XML standard versions.</para>
 
               <para>For example XML documents adhering to the (unsuccessful)
-              <link xlink:href="http://www.w3.org/TR/xml11/#sec-xml11">XML
+              <link xlink:href="https://www.w3.org/TR/xml11/#sec-xml11">XML
               1.1</link> Standard may be analyzed by a parser accordingly by
               reading the prologue to apply the respective rule set.</para>
             </answer>
@@ -638,7 +638,7 @@ WHERE ID=1</programlisting>
                 Type</emphasis></quote> in <link
                 xlink:href="http://www.w3schools.com/schema/schema_dtypes_date.asp">http://www.w3schools.com/schema/schema_dtypes_date.asp</link>
                 and consider the corresponding reference definition in <link
-                xlink:href="http://www.w3.org/TR/xmlschema11-2/#duration">http://www.w3.org/TR/xmlschema11-2</link>.</para>
+                xlink:href="https://www.w3.org/TR/xmlschema11-2/#duration">http://www.w3.org/TR/xmlschema11-2</link>.</para>
               </question>
 
               <answer>
@@ -1410,7 +1410,7 @@ WHERE ID=1</programlisting>
 
     <glossary>
       <glossentry xml:id="gloss_API">
-        <glossterm><abbrev xlink:href="http://en.wikipedia.org/wiki/Api"
+        <glossterm><abbrev xlink:href="https://en.wikipedia.org/wiki/Api"
         xml:id="abbr_api">API</abbrev></glossterm>
 
         <glossdef>
@@ -1420,7 +1420,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_SqlDdl">
         <glossterm><abbrev
-        xlink:href="http://en.wikipedia.org/wiki/Data_definition_language"
+        xlink:href="https://en.wikipedia.org/wiki/Data_definition_language"
         xml:id="abbr_Ddl">DDL</abbrev> <link
         linkend="gloss_SQL">(SQL)</link></glossterm>
 
@@ -1432,19 +1432,19 @@ WHERE ID=1</programlisting>
       </glossentry>
 
       <glossentry xml:id="gloss_DOM">
-        <glossterm><acronym xlink:href="http://www.w3.org/DOM"
+        <glossterm><acronym xlink:href="https://www.w3.org/DOM"
         xml:id="abbr_Dom">DOM</acronym></glossterm>
 
         <glossdef>
           <para>The <link linkend="gloss_W3C">W3C</link> <link
-          xlink:href="http://www.w3.org/DOM">Document Object Model</link>
+          xlink:href="https://www.w3.org/DOM">Document Object Model</link>
           standard</para>
         </glossdef>
       </glossentry>
 
       <glossentry xml:id="gloss_DTD">
         <glossterm><abbrev
-        xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration"
+        xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration"
         xml:id="abbr_Dtd">DTD</abbrev></glossterm>
 
         <glossdef>
@@ -1465,7 +1465,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_ftp">
         <glossterm><abbrev
-        xlink:href="http://en.wikipedia.org/wiki/File_Transfer_Protocol"
+        xlink:href="https://en.wikipedia.org/wiki/File_Transfer_Protocol"
         xml:id="abbr_Ftp">ftp</abbrev></glossterm>
 
         <glossdef>
@@ -1475,7 +1475,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_FO">
         <glossterm><abbrev
-        xlink:href="http://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section"
+        xlink:href="https://www.w3.org/TR/2001/REC-xsl-20011015/slice6.html#fo-section"
         xml:id="abbr_Fo">FO</abbrev></glossterm>
 
         <glossdef>
@@ -1485,7 +1485,7 @@ WHERE ID=1</programlisting>
       </glossentry>
 
       <glossentry xml:id="gloss_HDM">
-        <glossterm><orgname xlink:href="http://www.hdm-stuttgart.de"
+        <glossterm><orgname xlink:href="https://www.hdm-stuttgart.de"
         xml:id="org_Hdm">Hdm</orgname></glossterm>
 
         <glossdef>
@@ -1495,18 +1495,18 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_Hql">
         <glossterm><abbrev
-        xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html"
+        xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html"
         xml:id="abbr_Hql">HQL</abbrev></glossterm>
 
         <glossdef>
           <para>The <link
-          xlink:href="http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html">Hibernate
+          xlink:href="https://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html">Hibernate
           Query Language</link>.</para>
         </glossdef>
       </glossentry>
 
       <glossentry xml:id="gloss_http">
-        <glossterm><abbrev xlink:href="http://www.w3.org/Protocols"
+        <glossterm><abbrev xlink:href="https://www.w3.org/Protocols"
         xml:id="abbr_Http">http</abbrev></glossterm>
 
         <glossdef>
@@ -1516,7 +1516,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_IDE">
         <glossterm><abbrev
-        xlink:href="http://en.wikipedia.org/wiki/Integrated_development_environment"
+        xlink:href="https://en.wikipedia.org/wiki/Integrated_development_environment"
         xml:id="abbr_Ide">IDE</abbrev></glossterm>
 
         <glossdef>
@@ -1546,7 +1546,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_Javadoc">
         <glossterm><trademark
-        xlink:href="http://docs.oracle.com/javase/1.5.0/docs/guide/javadoc">Javadoc</trademark></glossterm>
+        xlink:href="https://docs.oracle.com/javase/1.5.0/docs/guide/javadoc">Javadoc</trademark></glossterm>
 
         <glossdef>
           <para>Extracting documentation embedded in <link
@@ -1601,13 +1601,13 @@ WHERE ID=1</programlisting>
         <glossterm><abbrev>MathML</abbrev></glossterm>
 
         <glossdef>
-          <para><link xlink:href="http://www.w3.org/Math">Mathematical Markup
+          <para><link xlink:href="https://www.w3.org/Math">Mathematical Markup
           Language</link></para>
         </glossdef>
       </glossentry>
 
       <glossentry xml:id="gloss_MIB">
-        <glossterm><orgname xlink:href="http://www.mi.hdm-stuttgart.de"
+        <glossterm><orgname xlink:href="https://www.mi.hdm-stuttgart.de"
         xml:id="org_Mib">MIB</orgname></glossterm>
 
         <glossdef>
@@ -1617,7 +1617,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_Mysql">
         <glossterm><trademark
-        xlink:href="http://www.mysql.com/about/legal/trademark.html"
+        xlink:href="https://www.mysql.com/about/legal/trademark.html"
         xml:id="tm_Mysql">Mysql</trademark></glossterm>
 
         <glossdef>
@@ -1643,7 +1643,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_PHP">
         <glossterm><abbrev
-        xlink:href="http://www.php.net">PHP</abbrev></glossterm>
+        xlink:href="https://secure.php.net">PHP</abbrev></glossterm>
 
         <glossdef>
           <para>Hypertext preprocessor</para>
@@ -1674,10 +1674,10 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_SQL">
         <glossterm><acronym
-        xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym></glossterm>
+        xlink:href="https://en.wikipedia.org/wiki/Sql">SQL</acronym></glossterm>
 
         <glossdef>
-          <para><link xlink:href="http://en.wikipedia.org/wiki/SQL">Structured
+          <para><link xlink:href="https://en.wikipedia.org/wiki/SQL">Structured
           query language</link>.</para>
         </glossdef>
       </glossentry>
@@ -1686,14 +1686,14 @@ WHERE ID=1</programlisting>
         <glossterm><abbrev>SVG</abbrev></glossterm>
 
         <glossdef>
-          <para><link xlink:href="http://www.w3.org/Graphics/SVG">Scalable
+          <para><link xlink:href="https://www.w3.org/Graphics/SVG">Scalable
           Vector Graphics</link>.</para>
         </glossdef>
       </glossentry>
 
       <glossentry xml:id="gloss_TCP">
         <glossterm><acronym
-        xlink:href="http://en.wikipedia.org/wiki/Transmission_Control_Protocol"
+        xlink:href="https://en.wikipedia.org/wiki/Transmission_Control_Protocol"
         xml:id="abbr_Tcp">TCP</acronym></glossterm>
 
         <glossdef>
@@ -1702,7 +1702,7 @@ WHERE ID=1</programlisting>
       </glossentry>
 
       <glossentry xml:id="gloss_URL">
-        <glossterm><abbrev xlink:href="http://www.ietf.org/rfc/rfc1738.txt"
+        <glossterm><abbrev xlink:href="https://www.ietf.org/rfc/rfc1738.txt"
         xml:id="abbr_Url">URL</abbrev></glossterm>
 
         <glossdef>
@@ -1724,16 +1724,16 @@ WHERE ID=1</programlisting>
 
         <glossdef>
           <para>Html as <link linkend="gloss_XML">XML</link> <link
-          xlink:href="http://www.w3.org/TR/xhtml11">standard</link>.</para>
+          xlink:href="https://www.w3.org/TR/xhtml11">standard</link>.</para>
         </glossdef>
       </glossentry>
 
       <glossentry xml:id="gloss_XML">
         <glossterm><abbrev
-        xlink:href="http://www.w3.org/XML">Xml</abbrev></glossterm>
+        xlink:href="https://www.w3.org/XML">Xml</abbrev></glossterm>
 
         <glossdef>
-          <para>The <link xlink:href="http://www.w3.org/XML">Extensible Markup
+          <para>The <link xlink:href="https://www.w3.org/XML">Extensible Markup
           Language</link>.</para>
         </glossdef>
       </glossentry>
@@ -1748,7 +1748,7 @@ WHERE ID=1</programlisting>
       </glossentry>
 
       <glossentry xml:id="gloss_XPath">
-        <glossterm><acronym xlink:href="http://www.w3.org/TR/xpath"
+        <glossterm><acronym xlink:href="https://www.w3.org/TR/xpath"
         xml:id="abbr_Xpath">XPath</acronym></glossterm>
 
         <glossdef>
@@ -1758,7 +1758,7 @@ WHERE ID=1</programlisting>
 
       <glossentry xml:id="gloss_XSD">
         <glossterm><abbrev
-        xlink:href="http://www.w3.org/Style/XSL">XSD</abbrev></glossterm>
+        xlink:href="https://www.w3.org/Style/XSL">XSD</abbrev></glossterm>
 
         <glossdef>
           <para>XML Schema description Language</para>
@@ -1766,7 +1766,7 @@ WHERE ID=1</programlisting>
       </glossentry>
 
       <glossentry xml:id="gloss_XSL">
-        <glossterm><abbrev xlink:href="http://www.w3.org/Style/XSL"
+        <glossterm><abbrev xlink:href="https://www.w3.org/Style/XSL"
         xml:id="abbr_Xsl">XSL</abbrev></glossterm>
 
         <glossdef>
diff --git a/Doc/Sda1/vaadin.xml b/Doc/Sda1/vaadin.xml
index 1b5a41a8c..059c74e38 100644
--- a/Doc/Sda1/vaadin.xml
+++ b/Doc/Sda1/vaadin.xml
@@ -8,10 +8,10 @@
          xmlns:html="http://www.w3.org/1999/xhtml"
          xmlns:db="http://docbook.org/ns/docbook">
   <title>Using <productname
-  xlink:href="http://vaadin.com">Vaadin</productname></title>
+  xlink:href="https://vaadin.com">Vaadin</productname></title>
 
   <para>This chapter presents <productname
-  xlink:href="http://vaadin.com">Vaadin</productname> framework related
+  xlink:href="https://vaadin.com">Vaadin</productname> framework related
   exercises.</para>
 
   <section xml:id="sda1SectVaadinMavenConfig">
@@ -36,11 +36,11 @@
 
         <glossdef>
           <para>The <productname
-          xlink:href="http://vaadin.com">Vaadin</productname> Maven repository
+          xlink:href="https://vaadin.com">Vaadin</productname> Maven repository
           does not allow for tool searching. Thus artifactId and related
           attributes of required dependencies must be identified in advance.
           If e.g. <code>maven-cdi</code> is being required <link
-          xlink:href="http://vaadin.com/nexus/#nexus-search">http://vaadin.com/nexus/#nexus-search</link>
+          xlink:href="https://vaadin.com/nexus/#nexus-search">http://vaadin.com/nexus/#nexus-search</link>
           tells us:</para>
 
           <programlisting language="xml">&lt;dependency&gt;
diff --git a/Doc/Sda1/xmlintro.xml b/Doc/Sda1/xmlintro.xml
index e5d8e55ec..0251b3e80 100644
--- a/Doc/Sda1/xmlintro.xml
+++ b/Doc/Sda1/xmlintro.xml
@@ -25,7 +25,7 @@
     referring to the standard itself: The world wide web's
     <foreignphrase>lingua franca</foreignphrase> HTML has been ported to an
     XML dialect forming the <link
-    xlink:href="http://www.w3.org/MarkUp">XHTML</link> Standard. The idea
+    xlink:href="https://www.w3.org/MarkUp">XHTML</link> Standard. The idea
     behind this standard is to distinguish between an abstract markup language
     and rendered results being generated from so called document instances by
     a browser:</para>
@@ -55,11 +55,11 @@
 
     <para>We may extend this example by representing a mathematical formula
     via a standard called <link
-    xlink:href="http://www.w3.org/Math">Mathml</link>:</para>
+    xlink:href="https://www.w3.org/Math">Mathml</link>:</para>
 
     <figure xml:id="mathmlExample">
       <title>A formula in <link
-      xlink:href="http://www.w3.org/Math">MathML</link>
+      xlink:href="https://www.w3.org/Math">MathML</link>
       representation.</title>
 
       <mediaobject>
@@ -76,7 +76,7 @@
 
     <itemizedlist>
       <listitem>
-        <para>The <link xlink:href="http://www.w3.org/Math">MathML</link>
+        <para>The <link xlink:href="https://www.w3.org/Math">MathML</link>
         standard intended to describe mathematical formulas. The standard
         defines a set of <emphasis>tags</emphasis> like e.g. <tag
         class="starttag">math:msqrt</tag> with well-defined semantics
@@ -109,12 +109,12 @@
 
     <para>In contrast to a RDBMS XML allows data to be organized
     hierarchically. The <link
-    xlink:href="http://www.w3.org/Math">MathML</link> representation given in
+    xlink:href="https://www.w3.org/Math">MathML</link> representation given in
     <xref linkend="mathmlExample"/> may be graphically visualized:</para>
 
     <figure xml:id="mathmltree">
       <title>A tree graph representation of the <link
-      xlink:href="http://www.w3.org/Math">MathML</link> example given
+      xlink:href="https://www.w3.org/Math">MathML</link> example given
       before.</title>
 
       <mediaobject>
@@ -180,7 +180,7 @@
       <callout arearefs="first_xml_code_magic">
         <para>The very first characters <code>&lt;?xml</code> may be regarded
         as a <link
-        xlink:href="http://en.wikipedia.org/wiki/Magic_number_(programming)">magic
+        xlink:href="https://en.wikipedia.org/wiki/Magic_number_(programming)">magic
         number string</link> being used as a format indicator which allows to
         distinguish between different file types i.e. GIF, JPEG, HTML and so
         on.</para>
@@ -189,7 +189,7 @@
       <callout arearefs="first_xml_code_version">
         <para>The <code>version="1.0"</code> attribute tells us that all
         subsequent lines will conform to the <link
-        xlink:href="http://www.w3.org/TR/xml">XML</link> standard of version
+        xlink:href="https://www.w3.org/TR/xml">XML</link> standard of version
         1.0. This way a document can express its conformance to the version
         1.0 standard even if in the future this standard evolves to a higher
         version e.g. <code>version="2.1"</code>.</para>
@@ -244,7 +244,7 @@
 Parsing was successful</errortext></programlisting>
 
     <para>Various XML related plugins are supplied for the <productname
-    xlink:href="http://eclipse.org">eclipse platform</productname> like the
+    xlink:href="https://eclipse.org">eclipse platform</productname> like the
     <productname xlink:href="http://oxygenxml.com">Oxygen
     software</productname> supplying <quote>life</quote> conformance checking
     while editing XML documents. Now we test our assumptions by violating some
@@ -430,19 +430,19 @@ terminated by the matching end-tag "&lt;/to&gt;". parsing error</computeroutput>
             quotes like <code>&lt;date day="monday'&gt;</code>. How does the
             parser react? Find the corresponding syntax definition of legal
             attribute values in the <link
-            xlink:href="http://www.w3.org/TR/xml">XML standard W3C
+            xlink:href="https://www.w3.org/TR/xml">XML standard W3C
             Recommendation</link>.</para>
           </question>
 
           <answer>
             <para>The parser flags a mixture of single and double quotes for a
             given attribute as an error. The XML standard <link
-            xlink:href="http://www.w3.org/TR/xml#NT-AttValue">defines</link>
+            xlink:href="https://www.w3.org/TR/xml#NT-AttValue">defines</link>
             the syntax of attribute values: An attribute value has to be
             enclosed <emphasis>either</emphasis> in two single
             <emphasis>or</emphasis> in two double quotes as being defined in
             <uri
-            xlink:href="http://www.w3.org/TR/xml/#NT-AttValue">http://www.w3.org/TR/xml/#NT-AttValue</uri>.</para>
+            xlink:href="https://www.w3.org/TR/xml/#NT-AttValue">http://www.w3.org/TR/xml/#NT-AttValue</uri>.</para>
           </answer>
         </qandaentry>
 
@@ -513,7 +513,7 @@ terminated by the matching end-tag "&lt;/to&gt;". parsing error</computeroutput>
     Standard.</para>
 
     <para>These constraints are part of the definition of a <link
-    xlink:href="http://www.w3.org/TR/xml#sec-well-formed">well formed
+    xlink:href="https://www.w3.org/TR/xml#sec-well-formed">well formed
     document</link>. The specification imposes additional constraints for a
     document to be well-formed.</para>
   </section>
diff --git a/Doc/Sda1/xmlschema.xml b/Doc/Sda1/xmlschema.xml
index b28e89346..58757d42e 100644
--- a/Doc/Sda1/xmlschema.xml
+++ b/Doc/Sda1/xmlschema.xml
@@ -85,7 +85,7 @@
       </listitem>
 
       <listitem>
-        <para><link xlink:href="http://www.w3.org/XML/Schema">XML
+        <para><link xlink:href="https://www.w3.org/XML/Schema">XML
         Schema</link></para>
       </listitem>
 
@@ -148,7 +148,7 @@
       <para>All these fields contain ordinary text to be filled in by a user
       and shall appear exactly in the defined order. For simplicity we do not
       care about email address syntax rules being described in <link
-      xlink:href="http://www.w3.org/Protocols/rfc822">RFC based address
+      xlink:href="https://www.w3.org/Protocols/rfc822">RFC based address
       schemes</link>. We will see how the <emphasis>constraints</emphasis>
       mentioned above can be modelled in XML by an extension to the concept of
       well formed documents.</para>
@@ -247,14 +247,14 @@
       <para>From the viewpoint of software modeling an XML Schema instance is
       a <emphasis>schema</emphasis> describing the syntax of a class of XML
       document instances adhering to it. In the context of XML technologies
-      <link xlink:href="http://www.w3.org/XML/Schema">XML Schema</link> is one
+      <link xlink:href="https://www.w3.org/XML/Schema">XML Schema</link> is one
       of several language alternatives which allow for XML document structure
       descriptions.</para>
 
       <para>Readers being familiar with <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Backus-Naur_form">BNF</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Backus-Naur_form">BNF</abbrev>
       or <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Extended_Backus_Naur_form">EBNF</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Extended_Backus_Naur_form">EBNF</abbrev>
       will be able to understand the grammatical rules being expressed
       here.</para>
 
@@ -369,10 +369,10 @@
           <callout arearefs="memo_external_dtd_url">
             <para>The address of the schema's rule set. In the given example
             it is just a filename but it may as well be an <link
-            xlink:href="http://www.w3.org/Addressing">URL</link> of type
+            xlink:href="https://www.w3.org/Addressing">URL</link> of type
             <abbrev
-            xlink:href="http://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>,
-            <abbrev xlink:href="http://www.w3.org/Protocols">http</abbrev> and
+            xlink:href="https://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>,
+            <abbrev xlink:href="https://www.w3.org/Protocols">http</abbrev> and
             so on, see <xref linkend="memoDtdOnFtp"/>.</para>
           </callout>
         </calloutlist>
@@ -391,11 +391,11 @@
       <emphasis>U</emphasis><foreignphrase>niform</foreignphrase>
       <emphasis>R</emphasis><foreignphrase>esource</foreignphrase>
       <emphasis>L</emphasis><foreignphrase>ocator</foreignphrase> <link
-      xlink:href="http://www.w3.org/Addressing">(URL)</link>. Thus our
+      xlink:href="https://www.w3.org/Addressing">(URL)</link>. Thus our
       <filename>memo.xsd</filename> may also be supplied as a <abbrev
-      xlink:href="http://www.w3.org/Protocols">http</abbrev> or <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>
-      <link xlink:href="http://www.w3.org/Addressing">URL</link>:</para>
+      xlink:href="https://www.w3.org/Protocols">http</abbrev> or <abbrev
+      xlink:href="https://en.wikipedia.org/wiki/File_Transfer_Protocol">ftp</abbrev>
+      <link xlink:href="https://www.w3.org/Addressing">URL</link>:</para>
 
       <figure xml:id="memoDtdOnFtp">
         <title>A schema reference to a FTP server.</title>
@@ -471,7 +471,7 @@
       <filename>memo.xsd</filename>.</para>
 
       <para>An element type being defined in a <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>
       may have document instances as realizations. For example the document
       instance shown in <xref linkend="memo_external_dtd"/> has two
       <emphasis>nodes</emphasis> of element type <tag
@@ -483,12 +483,12 @@
       about two <tag class="starttag">from</tag> elements. But the careful
       reader should always distinguish between a single type <code>foo</code>
       being defined in a <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>
       and the possibly empty set of <tag class="starttag">foo</tag> nodes
       appearing in valid document instances.</para>
 
       <para><abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">Schema</abbrev>'s
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">Schema</abbrev>'s
       appear on top of well-formed XML documents:</para>
 
       <figure xml:id="wellformedandvalid">
@@ -556,7 +556,7 @@
 
               <para>The aim of this exercise is to clarify the (abstract)
               relation between XML <abbrev
-              xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+              xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
               and sets of <xref linkend="glo_Java"/> classes rather then
               building a running application. We want to model the <link
               xlink:href="Sda1/Ref/src/Memo.1/memo.xsd">memo schema</link> as
@@ -594,7 +594,7 @@ public class Memo {
               our schema: A Memo document instance <emphasis>may</emphasis>
               have duplicate content in <tag class="starttag">to</tag> nodes.
               This is a weakness of <abbrev
-              xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>s:
+              xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>s:
               We are unable to impose uniqueness constraints on the content of
               partial sets of document nodes.</para>
 
@@ -627,7 +627,7 @@ public class Memo {
 
       <para>In the following chapters we will extend the memo document schema
       to demonstrate various concepts of <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
       and other XML related standards. In parallel a series of exercises deals
       with building a schema usable to edit books. This schema gets extended
       as our knowledge about XML advances. We start with an initial
@@ -731,16 +731,16 @@ public class Memo {
 
     <section xml:id="dtdVsSqlDdl">
       <title>Relating <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
-      and <acronym xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym>
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+      and <acronym xlink:href="https://en.wikipedia.org/wiki/Sql">SQL</acronym>
       - <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev></title>
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev></title>
 
       <para>XML <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
-      and <acronym xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym>
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+      and <acronym xlink:href="https://en.wikipedia.org/wiki/Sql">SQL</acronym>
       - <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
       are related: They both describe data models and thus integrity
       constraints. We consider a simple invoice example:</para>
 
@@ -983,13 +983,13 @@ public class Memo {
                   <itemizedlist>
                     <listitem>
                       <para><link
-                      xlink:href="http://en.wikipedia.org/wiki/List_of_airline_codes">ICAO
+                      xlink:href="https://en.wikipedia.org/wiki/List_of_airline_codes">ICAO
                       airline designator</link></para>
                     </listitem>
 
                     <listitem>
                       <para><link
-                      xlink:href="http://en.wikipedia.org/wiki/International_Civil_Aviation_Organization_airport_code">ICAO
+                      xlink:href="https://en.wikipedia.org/wiki/International_Civil_Aviation_Organization_airport_code">ICAO
                       airport code</link></para>
                     </listitem>
                   </itemizedlist>
@@ -1008,7 +1008,7 @@ public class Memo {
                   class="starttag">xs:assert test="..." </tag> and thus XML
                   schema version 1.1. You may want to read about co-occurrence
                   constraints as being described in <link
-                  xlink:href="http://www.ibm.com/developerworks/library/x-xml11pt2">Listing
+                  xlink:href="https://www.ibm.com/developerworks/library/x-xml11pt2">Listing
                   6. Assertion on complex type - @height &lt;
                   @width</link>.</para>
                 </listitem>
@@ -1213,7 +1213,7 @@ public class Memo {
 
     <section xml:id="xmlAndJava">
       <title>Relating <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+      xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
       and <xref linkend="glo_Java"/> class descriptions.</title>
 
       <para>We may also compare XML data constraints to <xref
@@ -1225,7 +1225,7 @@ public class Memo {
 
       <figure xml:id="fig_XmlAndJava">
         <title>XML <abbrev
-        xlink:href="http://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
+        xlink:href="https://en.wikipedia.org/wiki/Document_Type_Declaration">schema</abbrev>'s
         and <xref linkend="glo_Java"/> class declarations.</title>
 
         <mediaobject>
@@ -1650,7 +1650,7 @@ public class Memo {
 
                 <productionset>
                   <title><link
-                  xlink:href="http://www.w3.org/TR/2008/REC-xml-20081126/#d0e888">Literals</link></title>
+                  xlink:href="https://www.w3.org/TR/2008/REC-xml-20081126/#d0e888">Literals</link></title>
 
                   <production xml:id="w3RecXml_NT-EntityValue">
                     <lhs>EntityValue</lhs>
@@ -1806,7 +1806,7 @@ public class Memo {
                     element <tag class="starttag">link</tag> with target
                     referencing attribute <tag class="starttag">link
                     linkend="..."</tag> of type <code
-                    xlink:href="http://www.w3.org/TR/xmlschema11-2/#IDREF">xs:IDREF</code>.</para>
+                    xlink:href="https://www.w3.org/TR/xmlschema11-2/#IDREF">xs:IDREF</code>.</para>
                   </listitem>
                 </itemizedlist>
               </question>
diff --git a/Doc/Sda1/xslt.xml b/Doc/Sda1/xslt.xml
index 2543d6187..dbbfcf17a 100644
--- a/Doc/Sda1/xslt.xml
+++ b/Doc/Sda1/xslt.xml
@@ -8,7 +8,7 @@
          xmlns:db="http://docbook.org/ns/docbook">
   <title>The Extensible stylesheet Language XSL</title>
 
-  <para>XSL is a <link xlink:href="http://www.w3.org/Style/XSL">W3C
+  <para>XSL is a <link xlink:href="https://www.w3.org/Style/XSL">W3C
   standard</link> which defines a language to transform XML documents into the
   following output formats:</para>
 
@@ -65,7 +65,7 @@
 
   <section xml:id="xsl_helloworld">
     <title>A <quote>Hello, world</quote> <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> example</title>
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> example</title>
 
     <para>We start from an extended version of our
     <filename>memo.xsd</filename>:</para>
@@ -156,7 +156,7 @@
 
     <para>We want to extract the sender's name from an arbitrary <tag
     class="element">memo</tag> document instance. Using <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> this task can be
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> this task can be
     accomplished by a script <filename>memo2sender.xsl</filename>:</para>
 
     <programlisting language="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
@@ -173,7 +173,7 @@
 
     <para>Before closer examining this code we first show its effect. We need
     a piece of software called a <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor. It reads
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor. It reads
     both a <tag>memo</tag> document instance and a style sheet and produces
     the following output:</para>
 
@@ -184,7 +184,7 @@ Martin Goik</computeroutput></programlisting>
     Goik</computeroutput>. We may sketch the transformation principle:</para>
 
     <figure xml:id="figure_xsl_principle">
-      <title>An <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <title>An <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       processor transforming a XML document into a result using a
       stylesheet</title>
 
@@ -200,9 +200,9 @@ Martin Goik</computeroutput></programlisting>
     xlink:href="http://saxon.sourceforge.net">Saxon XSLT
     processor</productname>. We may also use the Eclipse/Oxygen plugin
     replacing the shell command by a GUI <link
-    xlink:href="http://www.oxygenxml.com/doc/ug-editorEclipse/#topics/defining-new-transformation-scenario.html">as
+    xlink:href="https://www.oxygenxml.com/doc/ug-editorEclipse/#topics/defining-new-transformation-scenario.html">as
     being described in the corresponding documentation</link>. Next we closer
-    examine the <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+    examine the <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
     example code:</para>
 
     <programlisting language="xml">&lt;xsl:stylesheet <co
@@ -235,7 +235,7 @@ Martin Goik</computeroutput></programlisting>
 
       <callout arearefs="programlisting_helloxsl_namespace_abbv">
         <para>The keyword <code>xmlns</code> is reserved by the <link
-        xlink:href="http://www.w3.org/TR/REC-xml-names/">Namespaces in
+        xlink:href="https://www.w3.org/TR/REC-xml-names/">Namespaces in
         XML</link> specification. In <quote>pure</quote> XML the whole term
         <code>xmlns:xsl</code> would simply define an attribute. In presence
         of a namespace aware XML parser however the literal
@@ -250,14 +250,14 @@ Martin Goik</computeroutput></programlisting>
       </callout>
 
       <callout arearefs="programlisting_helloxsl_xsl_version">
-        <para>The <link xlink:href="http://www.w3.org/TR/xslt20">XSL
+        <para>The <link xlink:href="https://www.w3.org/TR/xslt20">XSL
         standard</link> is still evolving. The version number identifies the
         conformance level for the subsequent code.</para>
       </callout>
 
       <callout arearefs="programlisting_helloxsl_method_text">
         <para>The <tag class="attribute">method</tag> attribute in the <link
-        xlink:href="http://www.w3.org/TR/xslt20/#element-output">&lt;xsl:output&gt;</link>
+        xlink:href="https://www.w3.org/TR/xslt20/#element-output">&lt;xsl:output&gt;</link>
         element specifies the type of output to be generated. Depending on
         this type we may also define indentation depths and/or encoding.
         Allowed <tag class="attvalue">method</tag> values are:</para>
@@ -275,7 +275,7 @@ Martin Goik</computeroutput></programlisting>
             <glossterm>html</glossterm>
 
             <glossdef>
-              <para><link xlink:href="http://www.w3.org/TR/html4">HTML</link>
+              <para><link xlink:href="https://www.w3.org/TR/html4">HTML</link>
               markup.</para>
             </glossdef>
           </glossentry>
@@ -285,7 +285,7 @@ Martin Goik</computeroutput></programlisting>
 
             <glossdef>
               <para><link
-              xlink:href="http://www.w3.org/TR/xhtml1">Xhtml</link> markup
+              xlink:href="https://www.w3.org/TR/xhtml1">Xhtml</link> markup
               differing from the former by e.g. the closing
               <quote>/&gt;</quote> in <tag>&lt;img
               src="..."/&gt;</tag>.</para>
@@ -322,7 +322,7 @@ Martin Goik</computeroutput></programlisting>
       <callout arch=""
                arearefs="programlisting_helloxsl_value-of programlisting_helloxsl_valueof_select_att">
         <para>A <tag class="element">value-of</tag> element writes content to
-        the <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+        the <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
         process' output. In this example the <code>#PCDATA</code> content from
         the element <tag class="element">from</tag> will be written to the
         output.</para>
@@ -331,19 +331,19 @@ Martin Goik</computeroutput></programlisting>
   </section>
 
   <section xml:id="xpath">
-    <title><link xlink:href="http://www.w3.org/TR/xpath">XPath</link> and node
+    <title><link xlink:href="https://www.w3.org/TR/xpath">XPath</link> and node
     sets</title>
 
-    <para>The <acronym xlink:href="http://www.w3.org/TR/xpath">XPath</acronym>
+    <para>The <acronym xlink:href="https://www.w3.org/TR/xpath">XPath</acronym>
     standard allows us to retrieve node sets from XML documents by predicate
     based queries. Thus its role may be compared to <acronym
-    xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym>
+    xlink:href="https://en.wikipedia.org/wiki/Sql">SQL</acronym>
     <code>SELECT</code> ... <code>FROM</code> ...<code>WHERE</code> queries.
     Some simple examples:</para>
 
     <figure xml:id="fig_Xpath">
       <title>Simple <acronym
-      xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> queries</title>
+      xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> queries</title>
 
       <mediaobject>
         <imageobject>
@@ -387,7 +387,7 @@ Martin Goik</computeroutput></programlisting>
       </callout>
 
       <callout arearefs="programlisting_tolist_xpath_memo_to">
-        <para>The <link xlink:href="http://www.w3.org/TR/xpath">XPath</link>
+        <para>The <link xlink:href="https://www.w3.org/TR/xpath">XPath</link>
         expression <tag class="attvalue">memo/to</tag> gets evaluated starting
         from the invisible top level document node being the context node. For
         the given document instance this will define a result set containing
@@ -409,7 +409,7 @@ Martin Goik</computeroutput></programlisting>
     <figure xml:id="figure_recipientlist_trailing_comma">
       <title>A list of recipients.</title>
 
-      <para>The <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <para>The <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       presented before yields:</para>
 
       <programlisting language="none"><computeroutput>Adam Hacker,Eve Intruder</computeroutput><emphasis
@@ -426,14 +426,14 @@ Martin Goik</computeroutput></programlisting>
     each recipient. We now discuss the role of the two attributes <tag
     class="attribute">match="/"</tag> and <tag
     class="attribute">select=memo/to</tag>. Both are examples of so called
-    <link xlink:href="http://www.w3.org/TR/xpath">XPath</link> expressions.
+    <link xlink:href="https://www.w3.org/TR/xpath">XPath</link> expressions.
     They allow to define <emphasis>node sets</emphasis> being subsets from the
     set of all nodes from a given document instance.</para>
 
     <para>Conceptually <link
-    xlink:href="http://www.w3.org/TR/xpath">XPath</link> expressions may be
+    xlink:href="https://www.w3.org/TR/xpath">XPath</link> expressions may be
     compared to the <acronym
-    xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym> language the
+    xlink:href="https://en.wikipedia.org/wiki/Sql">SQL</acronym> language the
     latter allowing the retrieval of data<emphasis>sets</emphasis> from a
     relational database. We illustrate the current example by a figure:</para>
 
@@ -453,7 +453,7 @@ Martin Goik</computeroutput></programlisting>
     <quote>filled</quote>. This node represents the document instance as a
     whole and has got <tag>memo</tag> as its only child. We will rediscover
     this additional root node when we discuss the <abbrev
-    xlink:href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407">DOM</abbrev>
+    xlink:href="https://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407">DOM</abbrev>
     application programming interface.</para>
 
     <para>As already mentioned the expression <code>memo/to</code> evaluates
@@ -461,7 +461,7 @@ Martin Goik</computeroutput></programlisting>
     of two nodes of type <tag class="starttag">to</tag> each of them
     representing a recipient of the memo. We observe a subtle difference
     between the two <abbrev
-    xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expressions:</para>
+    xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expressions:</para>
 
     <glosslist>
       <glossentry>
@@ -471,19 +471,19 @@ Martin Goik</computeroutput></programlisting>
           <para>The expression starts and actually consists of the string
           <quote>/</quote>. Thus it can be called an
           <emphasis>absolute</emphasis> <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expression.
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expression.
           Like a file specification <filename>C:\dos\myprog.exe</filename> it
           starts on top level and needs no further context information to get
           evaluated.</para>
 
           <para>A <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> style sheet
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> style sheet
           <emphasis>must</emphasis> have an <link
-          xlink:href="http://www.w3.org/TR/xslt20/#initiating">initial context
+          xlink:href="https://www.w3.org/TR/xslt20/#initiating">initial context
           node</link> to start the transformation. This is achieved by
           providing exactly one <tag class="starttag">xsl:template</tag> with
           an absolute <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> value for its
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> value for its
           <tag class="attribute">match</tag> attribute like <tag
           class="attvalue">/memo</tag>.<emphasis/></para>
         </glossdef>
@@ -504,17 +504,17 @@ Martin Goik</computeroutput></programlisting>
 
           <para>Likewise we have to define a <emphasis>context</emphasis> node
           if we want to evaluate a relative <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expression.
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expression.
           In our example this is the root node. The XSL specification
           introduces the term <link
-          xlink:href="http://www.w3.org/TR/xslt20/#context">evaluation
+          xlink:href="https://www.w3.org/TR/xslt20/#context">evaluation
           context</link> for this purpose.</para>
         </glossdef>
       </glossentry>
     </glosslist>
 
     <para>In order to explain relative <abbrev
-    xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expressions we
+    xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expressions we
     consider <code>content/para</code> starting from the (unique!) <tag
     class="element">memo</tag> node:</para>
 
@@ -529,7 +529,7 @@ Martin Goik</computeroutput></programlisting>
 
         <caption>
           <para>The dashed lines represent the relative <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expressions
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expressions
           starting from the context node to each of the nodes in the result
           set.</para>
         </caption>
@@ -539,7 +539,7 @@ Martin Goik</computeroutput></programlisting>
 
   <section xml:id="xsl_important_elements">
     <title>Some important <abbrev
-    xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> elements</title>
+    xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> elements</title>
 
     <section xml:id="xsl_if">
       <title><tag class="starttag">xsl:if</tag></title>
@@ -606,7 +606,7 @@ Martin Goik</computeroutput></programlisting>
         <callout arearefs="programlisting_xsl_if_test">
           <para>The attribute value of <tag class="attribute">test</tag> will
           be <link
-          xlink:href="http://www.w3.org/TR/xslt20/#xsl-if">evaluated</link> as
+          xlink:href="https://www.w3.org/TR/xslt20/#xsl-if">evaluated</link> as
           a boolean. In this example it evaluates to <code>true</code> iff the
           attribute <tag class="attribute">id</tag> is defined for the context
           node. Since we are inside the <tag
@@ -620,7 +620,7 @@ Martin Goik</computeroutput></programlisting>
           <para>The <tag class="attribute">id</tag> attributes value is copied
           to the output. The <quote>@</quote> character in
           <code>select="@id"</code> tells the <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor to
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor to
           read the value of an <emphasis>attribute</emphasis> with name <tag
           class="attribute">id</tag> rather then the content of a nested
           sub<emphasis>element</emphasis> like in <code>&lt;to
@@ -637,7 +637,7 @@ Martin Goik</computeroutput></programlisting>
         <callout arearefs="programlisting_xsl_if_usevar">
           <para>The <quote>$</quote> sign in front of <code>newline</code>
           tells the <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor to
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor to
           access the variable <varname>newline</varname> previously defined in
           <coref linkend="programlisting_xsl_if_definevar"/> rather then
           interpreting it as the name of a sub element or an attribute.</para>
@@ -668,13 +668,13 @@ INSERT INTO Customer (id, name) VALUES ('eve', 'Eve intruder')</computeroutput><
               <para>We may use a <tag class="element">xsl:if</tag> to insert a
               comma for all but the very last recipient node. This can be
               achieved by using the <abbrev
-              xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> functions
+              xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> functions
               <link
-              xlink:href="http://www.w3.org/TR/xpath#function-position">position()</link>
+              xlink:href="https://www.w3.org/TR/xpath#function-position">position()</link>
               and <link
-              xlink:href="http://www.w3.org/TR/xpath#function-last">last()</link>.
+              xlink:href="https://www.w3.org/TR/xpath#function-last">last()</link>.
               Hint: The arithmetic operator <quote>&lt;</quote> may be used in
-              <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> to
+              <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> to
               compare two integer numbers. However it must be escaped as
               <code>&amp;lt;</code> in order to be XML compatible.</para>
             </question>
@@ -702,20 +702,20 @@ INSERT INTO Customer (id, name) VALUES ('eve', 'Eve intruder')</computeroutput><
 
               <para>In <xref linkend="programlisting_memo_export_sql"/> we
               used the <abbrev
-              xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> value
+              xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> value
               <quote>from|to</quote> to select the desired sender and
               recipient nodes. Inside the <tag
               class="element">xsl:for-each</tag> block we permitted only those
               nodes which have an <tag class="attribute">id</tag> attribute.
               These two steps may be combined into a single <abbrev
-              xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev>
+              xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev>
               expression obsoleting the <tag
               class="element">xsl:if</tag>.</para>
             </question>
 
             <answer>
               <para>We simply need a modified <abbrev
-              xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> in the
+              xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> in the
               <tag class="element">for-each</tag>:</para>
 
               <programlisting language="xml">&lt;xsl:for-each select="<emphasis
@@ -738,7 +738,7 @@ INSERT INTO Customer (id, name) VALUES ('eve', 'Eve intruder')</computeroutput><
 
       <para>We already used <tag class="element">xsl:for-each</tag> to iterate
       over a list of element nodes. <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> offers a different
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> offers a different
       possibility for this purpose. The idea is to define the formatting rules
       at a centralized location. So the solution to <xref
       linkend="example_position_last"/> in an equivalent way:</para>
@@ -829,7 +829,7 @@ for (int i = 0; i &lt; 10; i++){
       <para>So far calling a static method in <xref linkend="glo_Java"/> may
       be compared to a <tag class="starttag">xsl:apply-templates</tag>. There
       is however one big difference. In <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> the
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> the
       <quote>method</quote> being called may not exist at all. A <tag
       class="starttag">xsl:apply-templates</tag> instructs a processor to
       format a set of nodes. It does not contain information about any rules
@@ -848,7 +848,7 @@ for (int i = 0; i &lt; 10; i++){
 
       <para>Since no suitable template supplying rules for <tag
       class="starttag">content</tag> nodes exists a <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor uses a
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor uses a
       default formatting rule instead:</para>
 
       <programlisting language="none"><computeroutput>Thanks for your excellent work.Our firewall is definitely
@@ -874,12 +874,12 @@ broken! This bug has been reported by the sender.</computeroutput></programlisti
 &lt;/xsl:template&gt;</programlisting>
 
       <para>The <quote>*</quote> matches any element if there is no <link
-      xlink:href="http://www.w3.org/TR/xslt20/#conflict">better
+      xlink:href="https://www.w3.org/TR/xslt20/#conflict">better
       matching</link> rule defined. Since we did not supply any template for
       <tag class="starttag">content</tag> nodes at all this default template
       will match nodes of type <tag class="starttag">content</tag>. The
       function <code>name()</code> is predefined in <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> and returns the
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> and returns the
       element type name of a node. During the formatting process we will now
       see the following warning message:</para>
 
@@ -889,7 +889,7 @@ broken! This bug has been reported by the sender.</computeroutput></programlisti
       class="starttag">xyz</tag><code>foo</code><tag class="endtag">xyz</tag>
       containing only <code>#PCDATA</code> a simple <tag
       class="emptytag">xsl:apply-templates select="xyz"</tag> is sufficient: A
-      <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor
+      <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor
       uses its default rule and copies the node's content <code>foo</code> to
       its output.</para>
 
@@ -918,7 +918,7 @@ broken! This bug has been reported by the sender.</computeroutput></programlisti
             <answer>
               <para>We define two templates differing only in the static
               string value for a person's type. The relevant <abbrev
-              xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> portion
+              xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> portion
               reads:<programlisting language="xml">&lt;xsl:template match="/memo"&gt;
   &lt;xsl:apply-templates select="from|to"/&gt;
 &lt;/xsl:template&gt;
@@ -1015,8 +1015,8 @@ IV: ...
 ...</computeroutput></programlisting>
 
       <para>Though <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> offers <link
-      xlink:href="http://www.w3.org/TR/xslt20/#convert">a better way</link> we
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> offers <link
+      xlink:href="https://www.w3.org/TR/xslt20/#convert">a better way</link> we
       may generate these number literals by:</para>
 
       <programlisting language="xml">&lt;xsl:template match="/memo"&gt;
@@ -1064,11 +1064,11 @@ IV: ...
       <title>Listing the recipients of a memo</title>
 
       <para>In order to generate a XHTML <link
-      xlink:href="http://www.w3.org/TR/html401/struct/lists.html#h-10.2">list</link>
+      xlink:href="https://www.w3.org/TR/html401/struct/lists.html#h-10.2">list</link>
       of all <tag class="starttag">memo</tag> recipients of a memo we have to
       use <tag class="starttag">xsl:output method="xhtml"</tag> and embed the
       required HTML tags in our <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> style
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> style
       sheet:</para>
 
       <programlisting language="xml">&lt;xsl:output method="xhtml" indent="yes"/&gt;
@@ -1126,7 +1126,7 @@ IV: ...
 
       <para>This may be improved further by instructing the XSL formatter to
       use <uri
-      xlink:href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</uri>
+      xlink:href="https://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</uri>
       as default namespace:</para>
 
       <programlisting language="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
@@ -1166,18 +1166,18 @@ IV: ...
           <qandaentry>
             <question>
               <para>Create a <abbrev
-              xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> style
+              xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> style
               sheet to transform instances of the first version of <link
               endterm="example_bookDtd"
               linkend="example_bookDtd">book.xsd</link> (<xref
               linkend="example_bookDtd"/>) into <uri
-              xlink:href="http://www.w3.org/TR/xhtml1/#a_dtd_XHTML-1.0-Strict">Xhtml
+              xlink:href="https://www.w3.org/TR/xhtml1/#a_dtd_XHTML-1.0-Strict">Xhtml
               1.0 strict</uri>.</para>
 
               <para>You should first construct a Xhtml document
               <emphasis>manually</emphasis> before coding the XSL. After you
               have a <quote>working</quote> Xhtml example document create a
-              <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+              <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
               style sheet which transforms arbitrary
               <filename>book.xsd</filename> document instances into a
               corresponding Xhtml file.</para>
@@ -1261,9 +1261,9 @@ IV: ...
           <para>The color variable is used to compose the attribute <tag
           class="attribute">style</tag>'s value. The curly <code>{...}</code>
           braces are part of the <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> standard's
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> standard's
           syntax. They are required here to instruct the <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> processor to
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> processor to
           substitute the local variable <code>messageColor</code>'s value
           instead of simply copying the literal string
           <quote><code>$messageColor</code></quote> itself to the output
@@ -1273,7 +1273,7 @@ IV: ...
       </calloutlist>
 
       <para>Instead of constructing an extra variable <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> offers a slightly
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> offers a slightly
       more compact way for the same purpose. The <tag
       class="starttag">xsl:attribute</tag> element allows us to define the
       name of an attribute to be added together with an attribute value
@@ -1316,7 +1316,7 @@ IV: ...
 
               <para>XSL offers a standard function for this purpose namely
               <link
-              xlink:href="http://www.w3.org/TR/xslt20/#generate-id">generate-id(...)</link>.
+              xlink:href="https://www.w3.org/TR/xslt20/#generate-id">generate-id(...)</link>.
               In a nutshell this function takes a XML node as an argument (or
               being called without arguments it uses the context node) and
               creates a string value being unique with respect to
@@ -1428,7 +1428,7 @@ IV: ...
 need some <emphasis role="bold">&lt;em&gt;time&lt;/em&gt;</emphasis>.&lt;/p&gt;</programlisting>
 
       <para>We start with a first version of an <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> template:</para>
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> template:</para>
 
       <programlisting language="xml">  &lt;xsl:template match="content"&gt;
     &lt;p&gt;
@@ -1473,9 +1473,9 @@ need some <emphasis role="bold">&lt;em&gt;time&lt;/em&gt;</emphasis>.&lt;/p&gt;<
 
       <para>To correct this transformation script we have to tell the
       formatting processor to include bare text nodes into the output. The
-      <abbrev xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> standard
+      <abbrev xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> standard
       defines a function <link
-      xlink:href="http://www.w3.org/TR/xpath#path-abbrev">text()</link> for
+      xlink:href="https://www.w3.org/TR/xpath#path-abbrev">text()</link> for
       this purpose. It returns the boolean value <code>true</code> for an
       argument node of type text:</para>
 
@@ -1500,7 +1500,7 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
       <orderedlist>
         <listitem>
           <para>The <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expression
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expression
           <code>select="text()|emphasis|url"</code> corresponds nicely to the
           schema's content model definition:</para>
 
@@ -1521,7 +1521,7 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
           be formatted. During development some of the elements defined in a
           schema are likely to be omitted by accidence. For this reason the
           <quote>typical</quote> <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expression
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expression
           acting on mixed content models is defined to match
           <emphasis>any</emphasis> sub element nodes:</para>
 
@@ -1560,7 +1560,7 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
           format text nodes being <emphasis>immediate</emphasis> children of
           <tag class="starttag">content</tag>. This may be achieved by
           restricting the <abbrev
-          xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> expression to
+          xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> expression to
           <tag class="starttag">xsl:template
           match="content/text()"</tag>.</para>
         </listitem>
@@ -1570,11 +1570,11 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
     <section xml:id="section_xsl_functionid">
       <title>The function <code>id()</code></title>
 
-      <para>In <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <para>In <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       we sometimes want to lookup nodes by an attribute value of type <link
       xlink:href="???">ID</link>. We consider our product catalog from <xref
       linkend="sectSchemaProductCatalog"/>. The following <abbrev
-      xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> may be used to
+      xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> may be used to
       create <acronym>XHtml</acronym>l documents from <tag
       class="starttag">catalog</tag> instances:</para>
 
@@ -1654,10 +1654,10 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
         </mediaobject>
       </figure>
 
-      <para>In <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      <para>In <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       we may follow <code>ID</code> reference by means of the built in
       function <link
-      xlink:href="http://www.w3.org/TR/xpath#function-id">id(...)</link>:</para>
+      xlink:href="https://www.w3.org/TR/xpath#function-id">id(...)</link>:</para>
 
       <programlisting language="xml">&lt;xsl:template match="link"&gt;
   &lt;a href="#{@ref}"&gt;&lt;xsl:value-of select="."/&gt;&lt;/a&gt;
@@ -1701,16 +1701,16 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
 
               <para>The table model is a simplified version of the <xref
               linkend="glo_XHTML"/> table model. Read the <abbrev
-              xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+              xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
               documentation of the element <tag class="emptytag"
-              xlink:href="http://www.w3.org/TR/xslt20/#element-copy-of">xsl:copy-of</tag>
+              xlink:href="https://www.w3.org/TR/xslt20/#element-copy-of">xsl:copy-of</tag>
               for processing tables.</para>
 
               <tip>
                 <para>The Oxygen plugin's default configuration does not
                 validate <xref linkend="glo_XML"/> input documents. Using the
                 <link
-                xlink:href="http://www.w3.org/TR/xpath#function-id">id(...)</link>
+                xlink:href="https://www.w3.org/TR/xpath#function-id">id(...)</link>
                 function requires two IDE configuration steps:</para>
 
                 <glosslist>
@@ -1921,7 +1921,7 @@ you need some </emphasis>&lt;em&gt;time&lt;/em&gt;<emphasis role="bold">.</empha
               target's identity string is generated via
               <code>generate-id()</code>. But we may follow the reference via
               the <abbrev
-              xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> <link
+              xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> <link
               linkend="section_xsl_functionid">id()</link> function and then
               use the target's identity value:</para>
 
@@ -1993,7 +1993,7 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
       </calloutlist>
 
       <para>XSL supports this type of transformation by supplying <acronym
-      xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> axis
+      xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> axis
       definitions. We consider a memo document with 9 <tag
       class="starttag">to</tag> nodes:</para>
 
@@ -2060,16 +2060,16 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
       set of all nodes having the same parent as the context node and
       appearing <quote>before</quote> the context node. The notion
       <quote>before</quote> is meant in the sense of a <link
-      xlink:href="http://en.wikipedia.org/wiki/Depth-first_search">depth-first</link>
+      xlink:href="https://en.wikipedia.org/wiki/Depth-first_search">depth-first</link>
       traversal of the document tree. <abbrev
-      xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> provides
+      xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> provides
       different axis definitions, see <uri
-      xlink:href="http://www.w3.org/TR/xpath#axes">http://www.w3.org/TR/xpath#axes</uri>
+      xlink:href="https://www.w3.org/TR/xpath#axes">https://www.w3.org/TR/xpath#axes</uri>
       for details. We provide an illustration here:</para>
 
       <figure xml:id="disjointAxeSets">
         <title>Disjoint <acronym
-        xlink:href="http://www.w3.org/TR/xpath">XPath</acronym> axis
+        xlink:href="https://www.w3.org/TR/xpath">XPath</acronym> axis
         definitions.</title>
 
         <mediaobject>
@@ -2110,9 +2110,9 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
 
       <para>We consider a memo document instance. We want to generate one text
       file for each memo recipient containing just the recipient's name using
-      the <abbrev xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev>
+      the <abbrev xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev>
       element <link
-      xlink:href="http://www.w3.org/TR/xslt20/#element-result-document">&lt;xsl:result-document&gt;</link>:</para>
+      xlink:href="https://www.w3.org/TR/xslt20/#element-result-document">&lt;xsl:result-document&gt;</link>:</para>
 
       <programlisting language="xml">&lt;xsl:template match="/memo"&gt;
   &lt;xsl:apply-templates select="to"/&gt;
@@ -2134,7 +2134,7 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
       <calloutlist>
         <callout arearefs="programlisting_xsl_result_document_main">
           <para>The output from all generating <abbrev
-          xlink:href="http://www.w3.org/Style/XSL">XSL</abbrev> directives
+          xlink:href="https://www.w3.org/Style/XSL">XSL</abbrev> directives
           will be redirected from standard output to another output
           channel.</para>
         </callout>
@@ -2149,7 +2149,7 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
           <para>The <code>method</code> attribute possibly overrides a value
           being given in the <tag class="starttag">xsl:output</tag> element.
           We may also redefine <link
-          xlink:href="http://www.w3.org/TR/xslt20/#element-result-document">other
+          xlink:href="https://www.w3.org/TR/xslt20/#element-result-document">other
           attributes</link> from <tag class="starttag">xsl:output</tag> like
           <code>doctype-{public.system}</code> and the generated file's
           <code>encoding</code>.</para>
@@ -2182,7 +2182,7 @@ Jack Eve Jude  &lt;----Tolstoi----&gt; <co
               class="starttag">para</tag>. You need to identify the <tag
               class="starttag">chapter</tag> node embedding this para. This
               may be done by using a suitable <abbrev
-              xlink:href="http://www.w3.org/TR/xpath">XPath</abbrev> axis
+              xlink:href="https://www.w3.org/TR/xpath">XPath</abbrev> axis
               direction.</para>
             </question>
 
diff --git a/Doc/Sda2/jpa.xml b/Doc/Sda2/jpa.xml
index 51d6f8b10..aa2e5311d 100644
--- a/Doc/Sda2/jpa.xml
+++ b/Doc/Sda2/jpa.xml
@@ -49,7 +49,7 @@
 
       <para>The following section requires the eclipse Maven plugin to be
       installed. This may be accomplished by installing the <productname
-      xlink:href="http://www.jboss.org/tools">Jboss Tools</productname> via
+      xlink:href="https://www.jboss.org/tools">Jboss Tools</productname> via
       <guimenu>Help</guimenu> <guisubmenu>Eclipse Marketplace</guisubmenu>
       which will install Maven as a dependency.</para>
 
@@ -236,7 +236,7 @@
           </informalfigure>
 
           <para>Notice the location of the <productname
-          xlink:href="http://www.mysql.com">Mysql</productname> jar below the
+          xlink:href="https://www.mysql.com">Mysql</productname> jar below the
           <filename>.m2</filename> Maven folder in the user's home directory.
           If we share our project this location will change to e.g.
           <filename>c:\users\foo\.m2\...</filename> due to different system
@@ -339,10 +339,10 @@
       </figure>
 
       <para>This file may be edited with a simple text editor. The Eclipse
-      <productname xlink:href="http://www.jboss.org/tools">Jboss
+      <productname xlink:href="https://www.jboss.org/tools">Jboss
       Tools</productname> Eclipse plugin provides a configuration editor
       simplifying this task. They may be installed on top of Eclipse <link
-      xlink:href="http://www.jboss.org/tools/download">in several ways</link>.
+      xlink:href="https://www.jboss.org/tools/download">in several ways</link>.
       The following video shows some of its features.</para>
 
       <mediaobject>
@@ -399,7 +399,7 @@
     <para>The following class <classname>hibintro.v1.model.User</classname>
     will be used as a starting example to be mapped to a database. Notice the
     <classname>javax.persistence.Entity</classname> <link
-    xlink:href="http://docs.oracle.com/javase/tutorial/java/javaOO/annotations.html">annotation</link>
+    xlink:href="https://docs.oracle.com/javase/tutorial/java/javaOO/annotations.html">annotation</link>
     <coref linkend="entityAnnotation"/>:</para>
 
     <figure xml:id="mappingUserInstances">
@@ -762,7 +762,7 @@
       <figure xml:id="retrieveAllUserByHql">
         <title>Retrieving <classname>hibintro.v1.model.User</classname>
         instances by <abbrev
-        xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>.</title>
+        xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>.</title>
 
         <programlisting language="none">package hibintro.v1.run;
 	  ...
@@ -844,7 +844,7 @@
       </qandaset>
 
       <para>The careful reader may already expect <abbrev
-      xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>
+      xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>
       to offer additional features namely predicate based queries. Following
       <classname>hibintro.v1.run.SelectUser</classname> we may restrict our
       result set by an <xref linkend="glo_SQL"/> style <code>WHERE</code>
@@ -867,9 +867,9 @@
       <title>Criteria based queries</title>
 
       <para>Selecting Objects by <abbrev
-      xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>c
+      xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>c
       queries technically means parsing <abbrev
-      xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>
+      xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>
       and transforming it into some sort of abstract syntax tree. We may
       instead create corresponding structures by using
       <trademark>Hibernate</trademark>'s criteria API:</para>
@@ -905,7 +905,7 @@
 	}</programlisting>
 
       <para>Hibernates produces the following <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
       statements containing an attribute <code>selected</code> <coref
       linkend="attributeSelected"/>:</para>
 
@@ -1111,13 +1111,13 @@
       <code>nullable=false</code> is not needed.</para>
 
       <para>This is in accordance with <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>:
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>:
       Attributes composing a primary key must not allow <code>NULL</code>
       values but attributes only appearing in UNIQUE declarations may become
       <code>NULL</code>.</para>
 
       <para>The <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>
       reads:</para>
 
       <programlisting language="none">CREATE TABLE User (
@@ -1164,7 +1164,7 @@
       <para>In addition each project receives a unique integer id value as
       well. This is in accordance with the <quote>best practice</quote> rule
       of defining a <link
-      xlink:href="http://en.wikipedia.org/wiki/Surrogate_key">surrogate
+      xlink:href="https://en.wikipedia.org/wiki/Surrogate_key">surrogate
       key</link> <coref linkend="projectPrimaryKeyDefinition"/> to be used as
       (primary) object identifier. This immutable key will then become the
       target in foreign key definitions:</para>
@@ -1387,7 +1387,7 @@
       <para>Sometimes we are interested in changing <xref
       linkend="glo_JPA"/>'s default type mapping strategy. For example
       <trademark
-      xlink:href="http://www.mysql.com/about/legal/trademark.html">Mysql</trademark>
+      xlink:href="https://www.mysql.com/about/legal/trademark.html">Mysql</trademark>
       versions prior to 5.0 lack an appropriate type representing boolean
       values. It was therefore quite common mapping boolean properties to
       <code>CHAR(1)</code> with possible values being <code>'Y'</code> and
@@ -1438,7 +1438,7 @@
       <para>Readers being interested in more sophisticated strategies like
       mapping user defined data types to database types are advised to read
       the <link
-      xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch05.html#mapping-types">manual
+      xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch05.html#mapping-types">manual
       section on Hibernate types</link>.</para>
     </section>
 
@@ -1575,7 +1575,7 @@
                   <listitem>
                     <para>Use the <xref linkend="glo_JAXB"/> schema compiler
                     <command
-                    xlink:href="http://docs.oracle.com/javase/8/docs/technotes/tools/unix/xjc.html"><xref
+                    xlink:href="https://docs.oracle.com/javase/8/docs/technotes/tools/unix/xjc.html"><xref
                     linkend="glo_xjc"/></command> accordingly to create domain
                     classes corresponding to <tag
                     class="starttag">catalog</tag> and <tag
@@ -1584,9 +1584,9 @@
 
                   <listitem>
                     <para>Create a <classname
-                    xlink:href="http://docs.oracle.com/javase/8/docs/api/javax/xml/bind/JAXBContext.html">JAXBContext</classname>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/javax/xml/bind/JAXBContext.html">JAXBContext</classname>
                     and an <classname
-                    xlink:href="http://docs.oracle.com/javase/8/docs/api/javax/xml/bind/Unmarshaller.html">Unmarshaller</classname>
+                    xlink:href="https://docs.oracle.com/javase/8/docs/api/javax/xml/bind/Unmarshaller.html">Unmarshaller</classname>
                     instance to parse valid <tag
                     class="starttag">catalog</tag> instances
                     accordingly.</para>
@@ -1595,7 +1595,7 @@
                   <listitem>
                     <para>Supply <xref linkend="glo_JPA"/> annotations to the
                     <command
-                    xlink:href="http://docs.oracle.com/javase/8/docs/technotes/tools/unix/xjc.html"><xref
+                    xlink:href="https://docs.oracle.com/javase/8/docs/technotes/tools/unix/xjc.html"><xref
                     linkend="glo_xjc"/></command> generated
                     <classname>de.hdm_stuttgart.mi.sda2.jpa.cd.domain.Catalog</classname>
                     class.</para>
@@ -1603,10 +1603,10 @@
                 </itemizedlist>
 
                 <para>Hint: The Maven archetype <link
-                xlink:href="http://maven-repository.com/artifact/com.github.lalyos/standalone-jpa-eclipselink-archetype">standalone-jpa-eclipselink-archetype</link>
+                xlink:href="https://maven-repository.com/artifact/com.github.lalyos/standalone-jpa-eclipselink-archetype">standalone-jpa-eclipselink-archetype</link>
                 may help getting started with <xref linkend="glo_JPA"/>
                 configuration issues. You may want to add <link
-                xlink:href="http://repo1.maven.org/maven2/archetype-catalog.xml">http://repo1.maven.org/maven2/archetype-catalog.xml</link>
+                xlink:href="https://repo1.maven.org/maven2/archetype-catalog.xml">http://repo1.maven.org/maven2/archetype-catalog.xml</link>
                 to your list of archetype repositories.</para>
               </question>
 
@@ -1637,7 +1637,7 @@
 
     <para>Mapping inheritance hierarchies to relational databases means
     bridging the gap between object <link
-    xlink:href="http://en.wikipedia.org/wiki/Object-relational_impedance_mismatch">oriented
+    xlink:href="https://en.wikipedia.org/wiki/Object-relational_impedance_mismatch">oriented
     and relational models</link>. We start with a slightly modified example
     from <xref linkend="bib_Bauer05"/>:</para>
 
@@ -1691,7 +1691,7 @@
       </figure>
 
       <para>The relation may be created by the following <abbrev
-      xlink:href="http://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>:</para>
+      xlink:href="https://en.wikipedia.org/wiki/Data_definition_language">DDL</abbrev>:</para>
 
       <figure xml:id="fig_TablePerClassHierarchyMapping">
         <title>Mapping the inheritance hierarchy.</title>
@@ -1867,7 +1867,7 @@
         <para>As in <xref linkend="retrieveAllUserByHql"/> objects being
         stored by <xref linkend="insertCreditBank"/> may be queried using
         <abbrev
-        xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>.</para>
+        xlink:href="https://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>.</para>
 
         <informaltable border="1">
           <colgroup width="6%"/>
diff --git a/Doc/Sda2/ldap.xml b/Doc/Sda2/ldap.xml
index f1e524a29..869a3dae8 100644
--- a/Doc/Sda2/ldap.xml
+++ b/Doc/Sda2/ldap.xml
@@ -78,7 +78,7 @@
           <step>
             <para>In the <quote>Connections</quote> window right click
             <quote>New Connection ...</quote> like in <uri
-            xlink:href="http://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_create_connection.html">http://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_create_connection.html</uri>.</para>
+            xlink:href="https://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_create_connection.html">http://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_create_connection.html</uri>.</para>
           </step>
 
           <step>
@@ -103,7 +103,7 @@
               <para>Add two departments <code>billing</code> and
               <code>research</code>. Then supply corresponding user entries to
               both departments by using the <link
-              xlink:href="http://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_browse.html">LDAP
+              xlink:href="https://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_browse.html">LDAP
               browser view</link>. (As being mentioned previously hardcore
               hackers take <link
               xlink:href="http://tldp.org/HOWTO/LDAP-HOWTO/utilities.html">this
@@ -325,9 +325,9 @@
 
               <para>Hint: <xref linkend="glo_Soft_ApacheDirectoryStudio"/> allows
               both for <link
-              xlink:href="http://directory.apache.org/studio/users-guide/ldap_browser/tools_filter_editor_dialog.html">filtering</link>
+              xlink:href="https://directory.apache.org/studio/users-guide/ldap_browser/tools_filter_editor_dialog.html">filtering</link>
               and <link
-              xlink:href="http://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_search.html">searching</link>
+              xlink:href="https://directory.apache.org/studio/users-guide/ldap_browser/gettingstarted_search.html">searching</link>
               providing nifty features like attribute name completion and
               syntax highlighting. For regular searches you may define:</para>
 
@@ -586,7 +586,7 @@
                 <listitem>
                   <para>Transfer RDBMS data to your local <xref
                   linkend="glo_LDAP"/> server using <link
-                  xlink:href="http://docs.oracle.com/javase/jndi/tutorial/ldap/misc/url.html">JNDI</link>.</para>
+                  xlink:href="https://docs.oracle.com/javase/jndi/tutorial/ldap/misc/url.html">JNDI</link>.</para>
                 </listitem>
               </orderedlist>
             </question>
@@ -618,22 +618,22 @@
           <itemizedlist>
             <listitem>
               <para><link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_READ_UNCOMMITTED">TRANSACTION_READ_UNCOMMITTED</link></para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_READ_UNCOMMITTED">TRANSACTION_READ_UNCOMMITTED</link></para>
             </listitem>
 
             <listitem>
               <para><link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_READ_COMMITTED">TRANSACTION_READ_COMMITTED</link></para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_READ_COMMITTED">TRANSACTION_READ_COMMITTED</link></para>
             </listitem>
 
             <listitem>
               <para><link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_REPEATABLE_READ">TRANSACTION_READ_REPEATABLE_READ</link></para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_REPEATABLE_READ">TRANSACTION_READ_REPEATABLE_READ</link></para>
             </listitem>
 
             <listitem>
               <para><link
-              xlink:href="http://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_SERIALIZABLE">TRANSACTION_READ_SERIALIZABLE</link></para>
+              xlink:href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#TRANSACTION_SERIALIZABLE">TRANSACTION_READ_SERIALIZABLE</link></para>
             </listitem>
           </itemizedlist>
         </listitem>
@@ -646,7 +646,7 @@
 
         <listitem>
           <para><link
-          xlink:href="http://technet.microsoft.com/en-us/library/ms378149(v=sql.110).aspx">Understanding
+          xlink:href="https://technet.microsoft.com/en-us/library/ms378149(v=sql.110).aspx">Understanding
           Isolation Levels (Microsoft)</link></para>
         </listitem>
       </itemizedlist>
diff --git a/Doc/Sdi/apache.xml b/Doc/Sdi/apache.xml
index bfd35e791..6a9238c95 100644
--- a/Doc/Sdi/apache.xml
+++ b/Doc/Sdi/apache.xml
@@ -16,7 +16,7 @@
 
     <itemizedlist>
       <listitem>
-        <para><link xlink:href="http://httpd.apache.org/docs/2.4">Apache HTTP
+        <para><link xlink:href="https://httpd.apache.org/docs/2.4">Apache HTTP
         Server Version 2.4 Documentation</link></para>
       </listitem>
     </itemizedlist>
@@ -143,7 +143,7 @@
 
       <itemizedlist>
         <listitem>
-          <para><link xlink:href="http://httpd.apache.org/docs/2.4/ssl">Apache
+          <para><link xlink:href="https://httpd.apache.org/docs/2.4/ssl">Apache
           SSL/TLS Encryption</link></para>
         </listitem>
 
@@ -187,7 +187,7 @@
         <listitem>
           <para>Configure <code>Require valid-user</code> in your apache
           configuration as being shown in <quote
-          xlink:href="http://httpd.apache.org/docs/current/howto/auth.html#multprovider">Using
+          xlink:href="https://httpd.apache.org/docs/current/howto/auth.html#multprovider">Using
           multiple providers</quote> (but using just <xref
           linkend="glo_LDAP"/> authentication rather than enabling
           <quote>file</quote> as well).</para>
@@ -216,7 +216,7 @@
 
         <listitem>
           <para>Install <link
-          xlink:href="http://sourceforge.net/projects/phpmyadmin">PhpMyadmin</link>
+          xlink:href="https://sourceforge.net/projects/phpmyadmin">PhpMyadmin</link>
           (using the package manager) to administer your <xref
           linkend="glo_Soft_Mysql"/> server.</para>
         </listitem>
@@ -329,7 +329,7 @@ java -Xmx512M -Dadvanced.syncDefault=true  \
 
           <tip>
             <para>This requires <link
-            xlink:href="http://askubuntu.com/questions/58179/install-mod-proxy-to-get-proxypass-to-work#answer-58185">enabling</link>
+            xlink:href="https://askubuntu.com/questions/58179/install-mod-proxy-to-get-proxypass-to-work#answer-58185">enabling</link>
             the Apache <xref linkend="glo_HTTP"/> proxy module.</para>
           </tip>
         </listitem>
diff --git a/Doc/Sdi/ldap.xml b/Doc/Sdi/ldap.xml
index 2a51ab771..ca048b820 100644
--- a/Doc/Sdi/ldap.xml
+++ b/Doc/Sdi/ldap.xml
@@ -28,7 +28,7 @@ Ldapmodify erlaubt icht-objectclass konforme Daten</programlisting>
 
       <listitem>
         <para><uri
-        xlink:href="http://www.novell.com/coolsolutions/feature/15359.html">An
+        xlink:href="https://www.novell.com/coolsolutions/feature/15359.html">An
         Introduction to LDAP: Part 1</uri></para>
       </listitem>
 
@@ -184,7 +184,7 @@ Ldapmodify erlaubt icht-objectclass konforme Daten</programlisting>
       <title>Browse an existing <xref linkend="glo_LDAP"/> Server</title>
 
       <para>Before setting up we take a tour on <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname>:</para>
 
       <itemizedlist>
@@ -288,7 +288,7 @@ aptitude install slapd</programlisting>
       linkend="sdiLdapBetrayerComTree"/>.</para>
 
       <para>For your convenience we have installed the <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname> Eclipse plugin which allows for convenient editing
       of <xref linkend="glo_LDAP"/> trees.</para>
 
@@ -387,7 +387,7 @@ aptitude install slapd</programlisting>
       </tip>
 
       <para>When you are finished an <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname> export dump might look like:</para>
 
       <programlisting language="ldif">dn: dc=betrayer,dc=com
@@ -446,14 +446,14 @@ userPassword:: e3NtZDV9YVhKL2JlVkF2TDRENk9pMFRLcDhjM3ovYTZQZzBXeHA=</programlist
       <title>Testing a bind operation as non - <code>admin</code> user</title>
 
       <para>Use <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname> to supply a <property>userPassword</property> to
       e.g.
       <code>uid=beam,ou=devel,ou=software,ou=departments,dc=betrayer;dc=com</code>
       (still binding as <code>cn=admin,dc=betrayer,dc=com</code>).</para>
 
       <para>Then configure a second <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname> profile binding as
       <code>uid=beam,ou=devel,ou=software,ou=departments,dc=betrayer,dc=com</code>.</para>
 
@@ -526,7 +526,7 @@ olcRootPW: {SSHA}7M0gUyHOH7cfK1z9amqgK0uQcn84AuYw</emphasis>
       configuration access to <code>localhost</code>.</para>
 
       <para>External access e.g. by <productname
-      xlink:href="http://directory.apache.org/studio">Apache Directory
+      xlink:href="https://directory.apache.org/studio">Apache Directory
       Studio</productname> requires adding this credential attribute. This
       first-time (bootstrapping) configuration must be done locally by means
       of an <xref linkend="glo_LDIF"/> file using a different user's hash
@@ -589,7 +589,7 @@ modifying entry "olcDatabase={0}config,cn=config"</programlisting>
       in <code>cn=config</code> appropriately.</para>
 
       <para>Consider <link
-      xlink:href="http://serverfault.com/questions/324608/how-do-i-get-openldap-on-centos-6-to-write-anything-to-its-log-files#answer-499902">using
+      xlink:href="https://serverfault.com/questions/324608/how-do-i-get-openldap-on-centos-6-to-write-anything-to-its-log-files#answer-499902">using
       olcLogFile</link>. Caveat: You <xref linkend="glo_LDAP"/> server daemon
       does runs from a non - root <property>uid</property>. Thus you have to
       assure sufficient writing permissions.</para>
diff --git a/Doc/Sdi/unixIntro.xml b/Doc/Sdi/unixIntro.xml
index 2950d027e..4e7ccafb9 100644
--- a/Doc/Sdi/unixIntro.xml
+++ b/Doc/Sdi/unixIntro.xml
@@ -32,7 +32,7 @@
           <para><link
           xlink:href="http://docstore.mik.ua/orelly/networking_2ndEd/ssh">The
           definitive guide</link>, also available at <link
-          xlink:href="http://proquest.safaribooksonline.com/book/networking/ssh/0596000111">SafariOnline</link></para>
+          xlink:href="https://proquest.safaribooksonline.com/book/networking/ssh/0596000111">SafariOnline</link></para>
 
           <itemizedlist>
             <listitem>
-- 
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