Programm extending the JFrame

game = new TestGame(socketToServer);
setContentPane(game);

TestGame:

	public void mouseClicked(MouseEvent mo) {
		addPunkt(mo.getX(), mo.getY());
	}

	public void mouseEntered(MouseEvent arg0) {}

	public void mouseExited(MouseEvent arg0) {}

	public void mousePressed(MouseEvent arg0) {}

	public void mouseReleased(MouseEvent arg0) {}