Corrections

ws/eclipse/Sda1PreExam/src/party/NoOrganizerException.java

@@ -8,8 +8,8 @@ package party;
  *
  */
 public class NoOrganizerException extends ArithmeticException {
-    @Override
-    public String getMessage() {
-        return "No organizer has been defined. How shall I share costs?";
-    }
+	
+	public NoOrganizerException(float expenses) {
+		super("No organizer has been defined. How shall I share " + expenses + " of expenses?");
+	}
 }

ws/eclipse/Sda1PreExam/src/party/PartyStatistics.java

@@ -5,7 +5,7 @@ package party;
  * @author goik
  * 
  * Provide statistical information regarding a party. We distinguish
- * between the numbers of guests and the number of organizers.
+ * between the number of guests and the number of organizers.
  * The whole party will cost a certain amount of money being set 
  * by the {@link #setExpenses(float)} method.
  * 

ws/eclipse/Sda1PreExam/src/party/PartyStatisticsAverageImpl.java

@@ -16,7 +16,7 @@ abstract class PartyStatisticsAverageImpl implements PartyStatistics {
         if (0 < numOrganizers) {
             return expenses / numOrganizers;
         } else {
-            throw new NoOrganizerException();
+            throw new NoOrganizerException(expenses);
         }
     }