How to specify java compiler option in IntelliJ and Ant

I want to generate debug information from my source code in IntelliJ.

I can use this in command line:

javac -g

But how co开发者_如何学编程uld I do that in IntelliJ and Ant? Thanks.

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In IDEA enable Settings | Compiler | Java Compiler, Generate debugging info. When using Ant add debug="true" to <javac> task.