View:
	
	
	
	
	
		
	
wind = modell
getAuthor() liefert ein String[] zurück.
Wird das Fenster per Menu erstellt passiert folgendes:
	
	
	
	
	
		
	
Also irgendwie passt Java das nicht
 Wie benutzt man MVC im zusammenhand mit dem einmaligen aufbau des Fensters richtig?
			
			
		Code:
	
	public void init()
{
        ....
        panelauthor = new JPanel();
        controller.updateAuthor(); // ruft die db Abfrage auf die die Authoren im modell speichert
	panelauthor.add(jcomboboxauthor);
        getContentPane().add(panelauthor);
        ...
}
public void update(Observable arg0, Object arg1) 
{
	Library wind = (Library) arg1;
	jcomboboxauthor = new JComboBox(wind.getAuthor());
}
	wind = modell
getAuthor() liefert ein String[] zurück.
Wird das Fenster per Menu erstellt passiert folgendes:
		Code:
	
	Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at java.awt.Container.addImpl(Unknown Source)
	at java.awt.Container.add(Unknown Source)
	at test.view.NewEntry.init(NewEntry.java:114)
	at test.view.NewEntry.<init>(NewEntry.java:60)
	at test.controll.LibraryController.newEntry(LibraryController.java:23)
	at test.view.LibraryViewer.actionPerformed(LibraryViewer.java:139)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.AbstractButton.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
	Also irgendwie passt Java das nicht