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From Drew Davidson <>
Subject Re: Tool to find unused methods
Date Mon, 25 Mar 2002 16:22:50 GMT
Dominique Devienne wrote:

> I remember there's a Java tools with an ANT wrapper that can generate a JAR
> file with only the pieces needed by an application. You give it a few
> starting classes, and it finds and adds to the JAR all the dependent
> classes. I believe it's on sourceforge, but I can't remember its name. It's
> the closest I can think of your problem. The granularity is at the class
> level, since concerns itself with generating JARs, but maybe it can be used
> at the method level???
> Also, you might use Jakarta's BCEL to parse class files, including the code
> of methods.
> Something you might try is to use javap.exe to convert the class file in
> ASCII, and grep/seach it!?!?!?
> I hope this helps. --DD

I generally wouldn't want to use such tools in any code for which you don't
have intimate knowledge because java allows lots of dynamic behaviour wrt class
loading.  I can do:


without having to import, so a dependency analysis based on imports
will fail to add to the jar.

- Drew

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