I want to close a Frame automatically not by clicking the close button. I want it to be closed programmaticaly.
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frame closing programmatically
I want to close a Frame automatically not by clicking the close button. I want it to be closed programmaticaly.
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Re: frame closing programmatically
Either
orframe.dispose();
frame.setVisible(false);
The first will actually dispose of the JFrame and all of its components, the second just make it invisible if you ever want to make it visible again during the duration of the program.
Re: frame closing programmatically
but each of them that I use I get the following error;
"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException"
Re: frame closing programmatically
Post an SSCCE* or it didn't happen. (link below)
* SSCCE : Java Glossary
db
Re: frame closing programmatically
Make sure that the frame you are trying to dispose of exists and is running:
if (frame != null) { frame.dispose(); }
Re: frame closing programmatically
thank you for your point. when I check if the frame is null it returns null but I can see that the frame is open and it is not closed. how is it possible?
Re: frame closing programmatically
So where's that SSCCE?
db
Re: frame closing programmatically
I am still patient!
Re: frame closing programmatically
Good for you.
db
Re: frame closing programmatically
good for you that don't have the answer to my question.
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