Compile Java without optimization?

I'm 开发者_Python百科working on some of the problems in Programming Pearls and I'd like to get a sense for the runtime of various programs in Java. However the optimizing compiler is making this difficult. Is there a way to run javac on a Mac without having the compiler make any optimizations?

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@Andrew Thompson is correct, the JIT is the main source of optimizations with java.

To run java without the JIT:

 java -Xint ...