Thanks for this contribution! The mapping looks good.

The one question I have revolves around the test case. You've added a test which always fails which isn't a bad thing, but there's no test that includes a successful execution of the function.

However, it's probably not a good idea to alter the Window Z order for a test. But perhaps we could find the topmost window already and execute this function on that handle. WindowUtils.getAllWindows() I believe returns windows in Z order; it's possible that you could insert this test in WindowUtilsTest() somewhere where we know we have the top window. Open to any other ideas/suggestions, even just adding to a demo somewhere to demonstrate that it works even if it's not part of CI.

Thanks for the feedback!

I had a look at WindowUtilsTest. I noticed that there were some tests that create their own JFrame for testing. So I took inspiration from that. The test now also creates its own 'JFrame' and brings that to the top.

LGTM. Will merge later today.