Dispose will usually do what you tell it to do by calling the setDefaultCloseOperation(...) on your JFrame with proper parameter, which I think for you will be (JFrame.DISPOSE_ON_CLOSE.
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Type: Posts; User: curmudgeon
Re: JAR Run Perfect in My Ubuntu 12.04 but not in Windows or Another OS
Dispose will usually do what you tell it to do by calling the setDefaultCloseOperation(...) on your JFrame with proper parameter, which I think for you will be (JFrame.DISPOSE_ON_CLOSE.
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