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>You have probably encountered the occasional Java desktop app, without realising. If you can't easily tell it is Java, the development team have done a good job.

I've never seen any Java desktop app that I cannot easily tell it's Java. With most of those apps, even on i7/16GB/SSD systems, you get laggy behavior with Swing and the GC. And SWT still has the "uncanny valley" look going.

Usually because the said developers are too dumb and do everything on the UI thread.

Yes. And things are a lot better now, I remember using IBM WebSphere UI tools (written in Java) circa 2004-5.

It took several seconds of whited-out buttons and stuck UI for every CPU intensive operation -- all on the same thread. And that was from IBM, and from tools that you paid for a small fortune.

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