How can I ensure all Java threads die

Question

I am writing a multithreaded Java program, which I will run from the command prompt. It's got both a gui (javafx) and a lot of background threads. If I hit Ctrl+C from the command prompt that I started the program with, it asks "Terminate Batch job? Y/N" and I hit Y and then I'm simply returned to the prompt. However - I am wondering if there by any chance might still be running any background threads that weren't terminated gracefully?

have a reference to them in an array – Developerium Feb 15 '15 at 08:22 — Developerium, Feb 15 '15 at 08:22

score 4 · Accepted Answer · edited May 23 '17 at 12:12

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Your "main" code and all the threads run in JVM. If you terminate JVM (as process) then everything running in it will be terminated as well.

More on "catching" ctrl+c: Catching Ctrl+C in Java

edited May 23 '17 at 12:12

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answered Feb 15 '15 at 05:47

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score 1 · Answer 2 · answered Feb 15 '15 at 05:40

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As far as I know, there's no way to "catch" or "intercept" Ctrl+C "event" from the command line, so your can't really tell if there are any unfinished threads and end them gracefully. (disappointing, I know).

answered Feb 15 '15 at 05:40

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How can I ensure all Java threads die

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