Warum wird mir das Fenster im folgenden Code nicht vergrössert?
Code:
public void initGUI()
{
frame = new JFrame("Viewer");
frame.setSize(500,500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
Container contentPane = frame.getContentPane();
contentPane.setLayout(new BorderLayout());
contentPane.add(lblTitel, BorderLayout.NORTH);
contentPane.add(filterPanel, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}