CloseWindow

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Closing a Window on KeyEvent in Java

Toolkit.getDefaultToolkit().getSystemEventQueue().push(new EventQueue() {
	@Override
	protected void dispatchEvent(AWTEvent event) {
		if (event instanceof KeyEvent) {
			KeyEvent keyEvent = (KeyEvent) event;
			if (KeyEvent.KEY_RELEASED == keyEvent.getID() && 
			   (KeyEvent.VK_ESCAPE == keyEvent.getKeyCode()  || 
			   (KeyEvent.VK_F4 == keyEvent.getKeyCode() && keyEvent.isAltDown() ))) {
 
					int conf = JOptionPane.showConfirmDialog(f, "Soll die Anwendung wirklich beendet werden?", "Beenden", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, icon);
 
		                            	if(conf==0){
		                            		System.exit(0);
		                            	}
 
		                            }
		                        }
		                        super.dispatchEvent(event);
		                    }
	});
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