I'm having a strange problem with a class that extends JDialog:
class MyDialog extends JDialog {
private static final long serialVersionUID = 11564288421L;
public MyDialog(JFrame owner, MyObject object) {
super(owner, true);
setSize(300, 200);
setLocationRelativeTo(owner);
String title = "Object ID: " + object.getId();
setTitle(title);
setVisible(true);
JLabel lblTitle = new JLabel(title);
lblTitle.setBounds(0, 0, this.getWidth(), 22);
lblTitle.setFont(new java.awt.Font("Tahoma", 1, 18));
lblTitle.setHorizontalAlignment(SwingConstants.CENTER);
getContentPane().setLayout(null);
getContentPane().add(lblTitle);
}
}
When I call it with new MyDialog(existingJFrameInstance, existingMyObjectInstance);, MyDialog is displayed and well-titled, but there's nothing in its ContentPane.
If I change the class into:
class MyDialog extends JFrame {
private static final long serialVersionUID = 11564288421L;
public MyDialog(JFrame owner, MyObject object) {
super();
setSize(300, 200);
setLocationRelativeTo(owner);
String title = "Object ID: " + object.getId();
setTitle(title);
setVisible(true);
JLabel lblTitle = new JLabel(title);
lblTitle.setBounds(0, 0, this.getWidth(), 22);
lblTitle.setFont(new java.awt.Font("Tahoma", 1, 18));
lblTitle.setHorizontalAlignment(SwingConstants.CENTER);
getContentPane().setLayout(null);
getContentPane().add(lblTitle);
}
}
Everything works just fine. I can't imagine what's happening here :\
I need the Window to be Modal, that's why I must go with JDialog instead of JFrame.
I tried using this.pack();, this.validate();, getContentPane().revalidate();, getContentPane().repaint(); etc etc etc in every possible combination and I am in the EDT (SwingUtilities.isEventDispatchThread() returns true).
Please help :)