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When the Wrapper detects that
System.exit() has been called,
it will call the stop() method on your application
if it implements the WrapperListener method.
You must be careful that your application does not
call System.exit() again
or call the dispose() method on an AWT frame or window.
Either one of these actions will result in a deadlock
when called from within a ShutdownHook thread
due to the way Java has implemented these methods.
If either of these cases can not be avoided, then the Shutdown Hook should be disabled.
If you have control over whether the
System.exit() or
dispose() methods are called,
you may be able to make use of the
WrapperManager.hasShutdownHookBeenTriggered()
method to avoid the deadlock issue.
For more information on the AWT deadlock bug, see the full description of
bug #4712342
on Sun's site.
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