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Editorial Team
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Asked: 2026-06-12T16:36:35+00:00

I’m making a server-client application project in netbeans. I made some Jpanel, and some

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I’m making a server-client application project in netbeans. I made some Jpanel, and some other stuff (buttons, textfield, textarea, menu) on my JFrame with the netbeans gui builder.
When I push the new server button the whole JFrame and the all of its components are got frozen, but the server-client part is working on the background. I think there is a problem about the threads or something,
but I’ve not really understood what i’m supposed to do.

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  1. Editorial Team

    The problem is likely that your server-client code is in fact not working in the background but instead working on the Swing event thread. You can test this you know with a SwingUtilities method: SwingUtilities.isEventDispatchThread()

    Also:

    • Are you using a SwingWorker to do the background work?
    • Are you doing any join() calls with a background thread?
    • Are you waiting on a SwingWorkers get() method?

    The details of your code will likely help us give you more specific advice. To learn what you’re supposed to do, please read, Lesson: Concurrency in Swing

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