searching for unreferenced classes

Are there any tools out there that will search source code in packages for unreferenced classes? We have about 200 classes and I am not convinced that we are actually using all of them. Ideally, I'd like a tool that just spits out the names of all classes that are not referenced in some way by the other classes (minus the main of course).
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fmaritatoAsked:
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memingConnect With a Mentor Commented:
Try JAX from IBM Alphaworks:
http://www.alphaworks.ibm.com/tech/JAX

"JAX, which is written in Java, is a Java application packaging tool that reduces the distribution size of a Java application. This means JAX collects the class files that  comprise a given application and takes out only those elements in the class files  that are not needed to execute the application. The result is a smaller "executable."  With all optimization techiques currently done by JAX, an estimated 30%-50%  reduction of the original application size is feasible. "
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mbormannCommented:
We have the same problem as we are going through a upgrade but the crux  of the matter is that if there si a Thread called Tracker and it's now useless,but it's still referred to in some code,JAX won't spit it out .
It's static so practically you would have to keep 1 guy assigned to this task as we did.

Result we cut down on 17 unnecessary Threads and 173 classes plus many useless methods , using both JAX and manual stuff.JAX did 55% of the job,though I have never used that.
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fmaritatoAuthor Commented:
Thanks. JAX is pretty clunky, and I was kinda hoping for a tool that would just analyze my source files and tell me what to take out so I can optimize the actual written code, but this is good for now.
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