Indeed (thanks VonC to point to the SO thread), Dustin, in a comment to his message, points to jstack.
I have run a little Java application (with GUI) in Eclipse, I can see the related javaw.exe in Windows' process manager and its PID, 7088 (it is even simpler in Unix, of course).
If I type at a command prompt jstack 7088
, I have the wanted stack dump per thread.
Cool.
Would be better if we could do that directly from Eclipse, but that's already useful as is.
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