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java/Eclipse: starting a new JVM in Debug mode

Tags:

java

eclipse

debugging

jvm

Is it possible for my Java program to start a 2nd JVM (via ProcessBuilder for instance running javaw.exe) in Debug mode so it appears in Eclipse's debug window?

If so, how?

like image 752
Jason S Avatar asked Apr 19 '11 14:04

Jason S

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1 Answers

A possible way to achieve what you (possibly) want: enable the second jvm for remote debugging. As far as I remember, you can tell the jvm to wait until the remote debugger is hooked to the session. Then, after that "child jvm" is spawned, start a remote debugging session in eclipse.

This is the set of parameters for a classic VM:

java -Xdebug -Xnoagent -Djava.compiler=NONE 
     -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005 ...

(suspend=y tells the jvm to wait for the debugger, 5005 is the port in this example)

Starting from JavaSE 1.5, these were replaced with a standardized parameter:

java -agentlib:jdwp=transport=dt_socket,address=localhost:9009,server=y,suspend=y
like image 113
Andreas Dolk Avatar answered Oct 21 '22 10:10

Andreas Dolk
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