CODEWITHSUNDEEP
javaswingjframeawtwindowlistener
jovanMeshkov
jovanMeshkov

Reputation: 797

dispose() is not the same as setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

I noticed that if setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) is set, closing the frame will end its Process in Task Manager, but if i implement WindowListener and manually dispose() the frame, Process will remain... probably because in new Runnable() i have something like this:

new Runnable() {
    void run() {
    Jsch tunnel=new Jsch();
    JFrame frame=new JFrame();
    frame.addWindowListener(new WindowListener() { frame.dispose(); } ); // imagine that this is legal 
    frame.setVisible(true);
    }
}

Anyone can tell me, how to manually end process created by some application?

Upvotes: 1

Views: 1495

Answers (1)

Tom Hawtin - tackline
Tom Hawtin - tackline

Reputation: 147124

From the API docs.

  • EXIT_ON_CLOSE (defined in JFrame): Exit the application using the System exit method. Use this only in applications.

So to force an exit call System.exit(0);.

When all top level windows are disposed, the AWT Event Dispatch Thread can be shut down (a new one can be create if needed). When there are no non-daemon threads left in the process, it will exit.

Upvotes: 3

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