Actual size of JFrame

Question

I have made a JFrame clearly through Java and set the size so that it is as large as possible on the screen. For instance I will use Toolkit.getDefaultToolkit().getScreenSize() to set the size of the JFrame, but because of the menu bar / dock etc. (in windows and mac) it gets resized to fit the screen. How would I be able to get this new dimension, which the JFrame defaults to?

http://stackoverflow.com/questions/2303305/window-resize-event — user1329572, Sep 07 '12 at 13:59

score 3 · Accepted Answer · edited May 23 '17 at 12:12

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I don't know if I am understanding your question correctly. But if you want to get the size of the screen minus the menu bar / task bar, this answer could help.

If you simply want to get the new dimensions of your JFrame then use:

yourFrame.getSize();

edited May 23 '17 at 12:12

Community

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answered Sep 07 '12 at 14:05

gmazlami

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Thanks, that's what I was looking for sorry about the re-ask. – user1654889 Sep 07 '12 at 23:13

score 3 · Answer 2 · answered Sep 07 '12 at 14:30

To maximize the JFrame, you add maximized both to the extended state.

frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH);

On Windows XP, this maximization takes into account the Windows status bar. However, the horizontal calculation is a few pixels off, and you won't see all of the side borders.

I've not tried this on Windows 7 or Unix.

You should also set a JFrame size, in case the user clicks on the maximize / restore size button (the middle button on a Windows JPanel).

Actual size of JFrame

2 Answers2