How to find out if a Java process was started in debugger?

Question

I sometimes use a timer to call System.exit in order to kill my throw-away code snippet after few seconds, which is quite useful in case it eats 100% CPU and Windows gets irresponsible because of this. It's quite handy, except in case I start it in debugger. In debugger I'd like to disable it automatically, otherwise I forget it and my debugged process gets killed. Can I find out if a process was started in debugger?

^{Note: I know I should not use this for anything serious. I'm not going to.}

possible duplicate of [How to find out if "debug mode" is enabled](http://stackoverflow.com/questions/3776204/how-to-find-out-if-debug-mode-is-enabled) — Joachim Sauer, Feb 09 '11 at 12:45
You're right - however, I could find it. So probably it's better not to close this question. I'd never figure out the wording **debug mode enabled**. — maaartinus, Feb 09 '11 at 14:44

score 5 · Accepted Answer · edited May 23 '17 at 11:53

5

Check here. This checks for the JDWP.

Basically:

boolean isDebug = java.lang.management.ManagementFactory.getRuntimeMXBean().
    getInputArguments().toString().indexOf("-agentlib:jdwp") > 0;

edited May 23 '17 at 11:53

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answered Feb 09 '11 at 12:08

Please treat your mods well.

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Cool, it works. The only problem: I need to wait for 10 minutes until I can accept this answer. – maaartinus Feb 09 '11 at 12:10

How to find out if a Java process was started in debugger?

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