How to start a background process from Swing application. In my swing application I start a background process thread by clicking a button. But When I close the application it also closes the thread. Any idea how to do it ?. Thanks
Are you setting the default close operation of the frame to EXIT_ON_CLOSE? That just calls System.exit() when you close your frame and kills the JVM. Same thing as if you attached a WindowListener to your frame and called System.exit(). If you want your frame to go away, but the thread to keep running, either hide (setVisible( false ) or HIDE_ON_CLOSE) or get rid of ( dispose() or DISPOSE_ON_CLOSE) your frame on closing, and wait for your thread to finish before calling System.exit(). If you have a reference to the thread, you can simply call thread.join() to do this. Important point - You have to put the code to wait for your thread to end and then call System.exit()... you can't skip this part because once you start up a GUI application in Java you must call System.exit() specifically because the AWT Event thread won't let the JVM die on its own.
Write once, run anywhere, because there's nowhere to hide! - /. A.C.
Joined: Apr 09, 2003
I use dispose() method to close the frame. But the background process has to run forever. Is it possible to start the process in different JVM ?