the language should now change correctly, especially if the default language...

the language should now change correctly, especially if the default language of the operating system is german.

VadereGui/src/org/vadere/gui/components/utils/Language.java

+package org.vadere.gui.components.utils;
+
+import org.vadere.gui.projectview.VadereApplication;
+
+import java.util.Locale;
+import java.util.prefs.Preferences;
+
+public class Language {
+
+	public static final Locale locale = Language.setLanguage();
+
+	/*
+	 * The default language of this application is english.
+	 */
+	static {
+		Locale.setDefault(Locale.ENGLISH);
+	}
+
+	static Locale setLanguage() {
+		String language = Preferences.userNodeForPackage(VadereApplication.class).get("language", null);
+		if (language != null) {
+			switch (language) {
+				case "de":
+					return new Locale("de", "DE");
+				case "en":
+				default:
+					return new Locale("en");
+			}
+		}
+		return Locale.getDefault();
+	}
+
+	public static boolean languageIsGerman() {
+		return locale.getLanguage().equals(Locale.GERMAN.getLanguage());
+	}
+}

VadereGui/src/org/vadere/gui/components/utils/Messages.java

 package org.vadere.gui.components.utils;
 
+import com.android.dx.gen.Local;
+
 import javax.swing.*;
 
 import org.vadere.gui.projectview.VadereApplication;
@@ -18,6 +20,8 @@ import java.util.prefs.Preferences;
  */
 public abstract class Messages {
 
+	private static final String BUNDLE_NAME = "messages";
+	private static final ResourceBundle RESOURCE_BUNDLE = loadBundle();
 
 	public static String getString(String key) {
 		try {
@@ -28,26 +32,8 @@ public abstract class Messages {
 		}
 	}
 
-	private static final String BUNDLE_NAME = "messages";
-	public static final Locale locale = setLanguage();
-	private static final ResourceBundle RESOURCE_BUNDLE = loadBundle();
-
 	private static ResourceBundle loadBundle() {
-		return ResourceBundle.getBundle(BUNDLE_NAME, locale);
-	}
-
-	private static Locale setLanguage() {
-		String language = Preferences.userNodeForPackage(VadereApplication.class).get("language", null);
-		if (language != null) {
-			switch (language) {
-				case "de":
-					return Locale.GERMAN;
-				case "en":
-				default:
-					return Locale.ENGLISH;
-			}
-		}
-		return Locale.getDefault();
+		return ResourceBundle.getBundle(BUNDLE_NAME, Language.locale);
 	}
 
 	public static void changeLanguage(Locale lang) {
@@ -56,8 +42,4 @@ public abstract class Messages {
 				getString("Messages.changeLanguagePopup.title"), JOptionPane.INFORMATION_MESSAGE);
 	}
 
-	public static boolean languageIsGerman() {
-		return locale.getLanguage().equals(Locale.GERMAN.getLanguage());
-	}
-
 }

VadereGui/src/org/vadere/gui/projectview/view/ProjectView.java

 package org.vadere.gui.projectview.view;
 
+import org.apache.commons.codec.language.bm.Lang;
 import org.apache.log4j.LogManager;
 import org.apache.log4j.Logger;
+import org.vadere.gui.components.utils.Language;
 import org.vadere.gui.components.utils.Messages;
 import org.vadere.gui.postvisualization.control.Player;
 import org.vadere.gui.projectview.VadereApplication;
@@ -410,7 +412,7 @@ public class ProjectView extends JFrame implements ProjectFinishedListener, Sing
 		ButtonGroup languageChoicesGroup = new ButtonGroup();
 		languageChoicesGroup.add(mntmEnglishLocale);
 		languageChoicesGroup.add(mntmGermanLocale);
-		if (Messages.languageIsGerman())
+		if (Language.languageIsGerman())
 			mntmGermanLocale.setSelected(true);
 		else
 			mntmEnglishLocale.setSelected(true);