JAVA消息对话框彼此重叠出现

Question

I am writing a reminder program that pops up message dialogs. The problem is that all of the dialogs appear right on top of each other. I would prefer to have them cascade. Normally with other programs a dialog will apear then the next one will be slightly down and off to the side. My code snippet is as follows:

final JFrame frame = new JFrame( "A timer to be a reminder" );
frame.setVisible( false ); 
frame.setAlwaysOnTop(true);
int result = JOptionPane.showConfirmDialog( frame, msg, "Timer", JOptionPane.DEFAULT_OPTION);

Can anyone point out how to get the desired behavior?

This has been solved, I am attaching my code snippet so that someone else will be able to find it.

JFrame frame = new JFrame( "A timer to be a reminder" );
frame.setLocationByPlatform( true );
frame.setVisible( true ); 
frame.setAlwaysOnTop(true);
int result = JOptionPane.showConfirmDialog( frame, msg, "Timer", JOptionPane.DEFAULT_OPTION);
frame.setVisible( false );
frame = null;

Answer 1

A JOptionPane is centered on the parent component or the center of the window if a null component is used.

To control placement you will need to use a custom JDialog . Then you can use:

dialog.setLocationByPlatform( true );

and the location will be determined by the fules of each platform for new windows.