Java - How to set focus the already running application ?

Posted by Brad on Stack Overflow See other posts from Stack Overflow or by Brad
Published on 2010-05-30T07:13:11Z Indexed on 2010/05/30 7:22 UTC
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swing

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focus

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instance

I am using a ServerSocket port to run one instance only of my Java Swing application, so if a user tries to open another instance of the program, i show him a warning that "Another instance is already open". This works fine, but instead of showing this message i want to set focus on the running application itself, like some programs does (MSN Messenger), even if it was minimized.

Is there a solution for this for various operating systems ?

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