Java SE (Java Platform, Standard Edition)

No this one is not quite like the question a few posts down, well not exactly anyway.
I have a JFrame with a windowAdapter that handles my closing tasks, it works just fine currently as long as the close button on the frame is clicked. I had to add a check in the program that should close the window if its true.

So I have code that checks a condition and if its true it shuts down all threads and trys to exit gracefully through the windowClosing event. As other posts have said I can use the jframe.dispose followed by System.exit and it works fine seeing that in the code thoughmakes me think its a kludge since dispose doesn't trigger the windowClosing event. I would like to somehow simulate clicking the close button on the frame when I need to exit because of an error but I'm not sure how to programatically do that.

My current window close operation is set to DO_NOTHING_ON_CLOSE so that the windowClosing event can handle the closing, I tried setting the operation to EXIT_ON_CLOSE then disposing the frame when the error occured but that didn't trigger the windowsClosing event either.
Any ideas?
Thanks,
Eudaemon.