How to make the main GUI thread 'wait' until a separate pop-up window is disappeared

Question

I have an object which is invoked from the main GUI thread and shows a separate JFrame for a number of seconds and then disappear (with the use of a timer). Now I want to make the main GUI thread to wait until the pop-up JFrame window disappears. For example, on the main GUI code:

// initiate the object and show the pop-up JFrame
DisappearingJFrame djf = new DisappearingJFrame ();
djf.show ();

// now the main GUI thread should wait
// and after the pop-up JFrame disappears, the rest of the code is then executed
...
...

Any suggestion would be welcome. Thanks.

Answer 1

Don't use a separate JFrame for this is what modal dialogs were built for. Use either a JOptionPane or a modal JDialog.

Answer 2

I have an object which is invoked from the main GUI thread and shows a separate JFrame

If you want to show more than one TopLayoutContainer(s) maybe it is better to look for JDialog because with that you can play with ModalityType & toFront() .

Isn't method show() deprecated and replaced with method JDialog.setVisible(boolean) ?