Java Open GUI and wait until its closed

Question

I'm trying to open a GUI and then wait until the JFrame is closed. I heard about JDialog but I don't know how to use it with my actual code:

GUI gui = new GUI();
gui.show(); // Creates some JButtons, JLabels, and show the JFrame.

Now I would like to wait until the JFrame is closed, but I don't know how to continue.

Can you help me please?

*"I heard about JDialog but I don't know how to use it with my actual code:"* Then [find out](https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html). That will be easier than making a frame behave in a modal manner. — Andrew Thompson, Jul 08 '15 at 07:15
I'm voting to close this question as off-topic because it is about 'using a hammer to tighten a screw' (use a screw driver). — Andrew Thompson, Jul 08 '15 at 07:16

score 2 · Answer 1 · answered Jul 08 '15 at 08:24

You can do it like this:

Inherit from JDialog instead of JFrame.
Call setModalityType(ModalityType.APPLICATION_MODAL) to make the dialog modal.
If you currently use the JFrame(LayoutManager) constructor, you have to call setLayout() to set the LayoutManager instead.
When you are done with your dialog, call setVisible(false) or dispose to continue with your program.

PS: Next time you should post working code that exposes your problem.

1 Answers1