Extract a JAR file, possibly with WINRAR on CL

I need to be able to extract jar files on the command line.

Piece of cake, you might say. Yes, except I need the extractor to rename same-named files. To be specific, the Jar file has a file named:

classAX.class 

and another named:

classax.class

in the same directory. I need it to extract them both, and preferably rename one:

classax (2).class

or something similar.

It must be able to do this without any user intervention.

Winrar has this capabi开发者_开发知识库lity, but when attempting to extract with unrar.exe, it says that the input file is not a valid RAR archive. (Though winrar has jar capabilities.)

Any way to force winrar to accept jars via command line, or perhaps another program?

Thanks,

~Kurt Nauck

You can develop your own programme in java, there is a Zip package that can deal with compressed files, an also you can deal with a rest of your needs

7Zip command line util accomplishes this perfectly. Thanks for the answers.