diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/.gitignore b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19d7c603173c0678aa6c06ba55fc4370bbd0b8fb
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/.gitignore
@@ -0,0 +1,6 @@
+/target/
+/.settings/
+.classpath
+.project
+dependency-reduced-pom.xml
+*.log
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/pom.xml b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..c5044ba7c65fec0cac2225fc3d79d79bf89271c8
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/pom.xml
@@ -0,0 +1,75 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>de.hdm_stuttgart.mi.sd1</groupId>
+ <artifactId>compass</artifactId>
+ <version>1.0</version>
+ <packaging>jar</packaging>
+
+ <name>compass</name>
+
+ <url>https://freedocs.mi.hdm-stuttgart.de/sd1SectToolsOfTheTrade2.html</url>
+
+ <description>Basic Java project.</description>
+
+ <properties>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ </properties>
+
+ <build>
+ <plugins>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>3.7.0</version>
+ <configuration>
+ <source>1.8</source>
+ <target>1.8</target>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <version>3.0.1</version>
+ <configuration>
+ <linksource>true</linksource>
+ <additionalOptions>
+ <additionalOption>-html5</additionalOption>
+ </additionalOptions>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-shade-plugin</artifactId>
+ <version>3.1.0</version>
+ <configuration>
+ <transformers>
+ <transformer
+ implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+ <manifestEntries>
+ <Main-Class>de.hdm_stuttgart.mi.sd1.direction.Direction</Main-Class>
+ </manifestEntries>
+ </transformer>
+ </transformers>
+ </configuration>
+ <executions>
+ <execution>
+ <phase>package</phase>
+ <goals>
+ <goal>shade</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-site-plugin</artifactId>
+ <version>3.7.1</version>
+ </plugin>
+ </plugins>
+ </build>
+</project>
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
new file mode 100644
index 0000000000000000000000000000000000000000..66896f907a6fdc992422383f50550034f78cbfab
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
@@ -0,0 +1,14 @@
+package de.hdm_stuttgart.mi.sd1;
+
+import de.hdm_stuttgart.mi.sd1.direction.Direction;
+
+public class Driver {
+
+ public static void main(String[] args) {
+
+ final Direction northWest = Direction.NW;
+
+ System.out.println(northWest);
+
+ }
+}
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
new file mode 100644
index 0000000000000000000000000000000000000000..c8f7fe8864ecab9cf3e3785e9da12a34932ea7e8
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_1.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
@@ -0,0 +1,35 @@
+package de.hdm_stuttgart.mi.sd1.direction;
+
+/**
+ * Representing eight compass directions.
+ */
+public enum Direction {
+
+ N( 0, "north"),
+ NE( 45, "north by east"),
+ E( 90, "east"),
+ SE(135, "south by east"),
+ S( 180, "south"),
+ SW(225, "south by west"),
+ W( 270, "west"),
+ NW(315, "north by west");
+
+ /**
+ * A direction specified by angle and informal description.
+ *
+ * @param degree A value ranging from 0 (N) to 315 (NW) mimic a compass rose.
+ * @param fullName The usual informal name i.e. north by west.
+ */
+ Direction(final int degree, final String fullName) {
+ this.degree = degree;
+ this.fullName = fullName;
+ }
+
+ @Override
+ public String toString() {
+ return fullName + " (" + degree + "°)";
+ }
+
+ public final int degree;
+ public final String fullName;
+}
\ No newline at end of file
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/.gitignore b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19d7c603173c0678aa6c06ba55fc4370bbd0b8fb
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/.gitignore
@@ -0,0 +1,6 @@
+/target/
+/.settings/
+.classpath
+.project
+dependency-reduced-pom.xml
+*.log
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/pom.xml b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..9a0aaffbe073bc7a48dd0cca66cbc6fc6ef28198
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/pom.xml
@@ -0,0 +1,75 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>de.hdm_stuttgart.mi.sd1</groupId>
+ <artifactId>compass</artifactId>
+ <version>2.0</version>
+ <packaging>jar</packaging>
+
+ <name>compass</name>
+
+ <url>https://freedocs.mi.hdm-stuttgart.de/sd1SectToolsOfTheTrade2.html</url>
+
+ <description>Basic Java project.</description>
+
+ <properties>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ </properties>
+
+ <build>
+ <plugins>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>3.7.0</version>
+ <configuration>
+ <source>1.8</source>
+ <target>1.8</target>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <version>3.0.1</version>
+ <configuration>
+ <linksource>true</linksource>
+ <additionalOptions>
+ <additionalOption>-html5</additionalOption>
+ </additionalOptions>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-shade-plugin</artifactId>
+ <version>3.1.0</version>
+ <configuration>
+ <transformers>
+ <transformer
+ implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+ <manifestEntries>
+ <Main-Class>de.hdm_stuttgart.mi.sd1.direction.Direction</Main-Class>
+ </manifestEntries>
+ </transformer>
+ </transformers>
+ </configuration>
+ <executions>
+ <execution>
+ <phase>package</phase>
+ <goals>
+ <goal>shade</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-site-plugin</artifactId>
+ <version>3.7.1</version>
+ </plugin>
+ </plugins>
+ </build>
+</project>
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
new file mode 100644
index 0000000000000000000000000000000000000000..7498913b630ebbf674377a1f0beaa530becc3e3a
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
@@ -0,0 +1,14 @@
+package de.hdm_stuttgart.mi.sd1;
+
+import de.hdm_stuttgart.mi.sd1.direction.Direction;
+
+public class Driver {
+
+ public static void main(String[] args) {
+
+ final Direction southWest = Direction.SW;
+
+ System.out.println("Direction: " + southWest);
+ System.out.println(" Opposite: " + southWest.opposite());
+ }
+}
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
new file mode 100644
index 0000000000000000000000000000000000000000..1a4e70ba6522770e2a8ec2e6a7eb58e31970bc6e
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_2.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
@@ -0,0 +1,55 @@
+package de.hdm_stuttgart.mi.sd1.direction;
+
+/**
+ * Representing eight compass directions.
+ */
+public enum Direction {
+
+ N( 0, "north"),
+ NE( 45, "north by east"),
+ E( 90, "east"),
+ SE(135, "south by east"),
+ S( 180, "south"),
+ SW(225, "south by west"),
+ W( 270, "west"),
+ NW(315, "north by west");
+
+ /**
+ * A direction specified by angle and informal description.
+ *
+ * @param degree A value ranging from 0 (N) to 315 (NW) mimic a compass rose.
+ * @param fullName The usual informal name i.e. north by west.
+ */
+ Direction(final int degree, final String fullName) {
+ this.degree = degree;
+ this.fullName = fullName;
+ }
+
+ /**
+ * Turning a given direction i.e. {@link #SE} into its counterpart {@link #NW}.
+ *
+ * @return Direction opposite to the current one.
+ */
+ public Direction opposite() {
+ switch (this) {
+ case N: return S;
+ case NE: return SW;
+ case E: return W;
+ case SE: return NW;
+ case S: return N;
+ case SW: return NE;
+ case W: return E;
+ case NW: return SE;
+
+ default: return null; // Unreachable, but our compiler does not know.
+ }
+ }
+
+ @Override
+ public String toString() {
+ return fullName + " (" + degree + "°)";
+ }
+
+ public final int degree;
+ public final String fullName;
+}
\ No newline at end of file
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/.gitignore b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19d7c603173c0678aa6c06ba55fc4370bbd0b8fb
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/.gitignore
@@ -0,0 +1,6 @@
+/target/
+/.settings/
+.classpath
+.project
+dependency-reduced-pom.xml
+*.log
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/pom.xml b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..68946d0dca8c6a72cff8ce78508e9cb509f80383
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/pom.xml
@@ -0,0 +1,75 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>de.hdm_stuttgart.mi.sd1</groupId>
+ <artifactId>compass</artifactId>
+ <version>3.0</version>
+ <packaging>jar</packaging>
+
+ <name>compass</name>
+
+ <url>https://freedocs.mi.hdm-stuttgart.de/sd1SectToolsOfTheTrade2.html</url>
+
+ <description>Basic Java project.</description>
+
+ <properties>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ </properties>
+
+ <build>
+ <plugins>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>3.7.0</version>
+ <configuration>
+ <source>1.8</source>
+ <target>1.8</target>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <version>3.0.1</version>
+ <configuration>
+ <linksource>true</linksource>
+ <additionalOptions>
+ <additionalOption>-html5</additionalOption>
+ </additionalOptions>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-shade-plugin</artifactId>
+ <version>3.1.0</version>
+ <configuration>
+ <transformers>
+ <transformer
+ implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+ <manifestEntries>
+ <Main-Class>de.hdm_stuttgart.mi.sd1.direction.Direction</Main-Class>
+ </manifestEntries>
+ </transformer>
+ </transformers>
+ </configuration>
+ <executions>
+ <execution>
+ <phase>package</phase>
+ <goals>
+ <goal>shade</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-site-plugin</artifactId>
+ <version>3.7.1</version>
+ </plugin>
+ </plugins>
+ </build>
+</project>
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
new file mode 100644
index 0000000000000000000000000000000000000000..7498913b630ebbf674377a1f0beaa530becc3e3a
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/Driver.java
@@ -0,0 +1,14 @@
+package de.hdm_stuttgart.mi.sd1;
+
+import de.hdm_stuttgart.mi.sd1.direction.Direction;
+
+public class Driver {
+
+ public static void main(String[] args) {
+
+ final Direction southWest = Direction.SW;
+
+ System.out.println("Direction: " + southWest);
+ System.out.println(" Opposite: " + southWest.opposite());
+ }
+}
diff --git a/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
new file mode 100644
index 0000000000000000000000000000000000000000..9dff8163d68023bdbfabd69ddfc454a16724217a
--- /dev/null
+++ b/Doc/Sd1/Ref/ObjectsAndClasses/Enum/Compass_3.0/src/main/java/de/hdm_stuttgart/mi/sd1/direction/Direction.java
@@ -0,0 +1,44 @@
+package de.hdm_stuttgart.mi.sd1.direction;
+
+/**
+ * Representing eight compass directions.
+ */
+public enum Direction {
+
+ N( 0, "north"),
+ NE( 45, "north by east"),
+ E( 90, "east"),
+ SE(135, "south by east"),
+ S( 180, "south"),
+ SW(225, "south by west"),
+ W( 270, "west"),
+ NW(315, "north by west");
+
+ /**
+ * A direction specified by angle and informal description.
+ *
+ * @param degree A value ranging from 0 (N) to 315 (NW) mimic a compass rose.
+ * @param fullName The usual informal name i.e. north by west.
+ */
+ Direction(final int degree, final String fullName) {
+ this.degree = degree;
+ this.fullName = fullName;
+ }
+
+ /**
+ * Turning a given direction i.e. {@link #SE} into its counterpart {@link #NW}.
+ *
+ * @return Direction opposite to the current one.
+ */
+ public Direction opposite() {
+ return values()[ (ordinal() + 4) % 8];
+ }
+
+ @Override
+ public String toString() {
+ return fullName + " (" + degree + "°)";
+ }
+
+ public final int degree;
+ public final String fullName;
+}
\ No newline at end of file