How to check JDialog state

Question

I have a JDialog and I'd like to check whether its state is maximized, minimized or normal. How can I do that?

I have tried:

private JDialog dialog = new JDialog();
dialog.addWindowStateListener(new WindowStateListener() { 
        @Override
        public void windowStateChanged(WindowEvent e) {  
                if(e.getNewState()==JFrame.MAXIMIZED_BOTH){ 
                        System.out.println(" state MAXIMIZED_BOTH");
                        dialog.repaint();
                }
        }
    }); 

but it doesn't work of course.

Thanks

Answer 1

A JDialog does not show the minimize/maximize buttons. If you look here, someone asked if you could add those buttons to a JDialog and it is discouraged. It looks like if you add a WindowStateListener to a JDialog, it never gets triggered.