I have developed a java application(an alarm which can be customised by the user). I want the application to run in the background(like utorrent). If the user pressed the exit button the application must not close down rather it must go to the system tray.
Minimizing to the system tray is done by adding an icon to the system tray, then calling setVisible(false) on your frame to hide it from the task bar. You may want to keep normal minimizing in there for the effect. The procedure is then like this (using a WindowListener):
To show it again, turn off the minimized (iconified) state and show it again:
To minimize in the closing event (which is called when you press the X) as well use the reverse for minimizing:
Keep in mind that this will cause another windowIconified event, so if you minimize in the closing event remove the hiding and the tray icon code from that event. The other event will handle that.