How to debug Java code when using ANT script in Eclipse

Question

I have a java class and I need to debug it (put breakpoints and continue using F6). I am using ANT script to init, build, deploy and run the code. I am using:

<javac srcdir="${src.dir}" destdir="${classes.dir}" debug="true" debuglevel="lines,vars,source">

..........

</javac>

But when I place the breakpoint in a line in my foo.java class and I run the ant script (the run part, Right Click on run-->Debug As-->Ant Build), Eclipse does not stop at that line of code.

What am I missing out?!

question from:https://stackoverflow.com/questions/2406825/how-to-debug-java-code-when-using-ant-script-in-eclipse

Answer 1

(Wasn't able to comment on the given answer, so have to make another answer)

I realized that when launching Ant from Eclipse, you'll have to add fork="true" to the <java> task. Also, it was first not clear to me how to write nested jvmargs, so here goes an example:

<java classname="..." fork="true">
  <jvmarg value="-Xdebug" />
  <jvmarg value="-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5432" />
  ...
</java>