How to walk jar files

[ricuzzo]

Hi to all,
I am trying to get the content of a jar file and read the size of each of the classes contained in the jar file. I am looking for it in internet but i dont find anything.
What i am really trying to do is to get the version of each file inside a jar file, any ideas?
(if anyone knows some kind of way to get a file version under windows or unix, it wil very welcome)
thank you!!

[fuffens]

Read the following article and download the code:

http://www.devx.com/Java/Article/16146/0/page/1

The zipfile module can be used to iterate through files in zip and jar archives.

Best regards
/Fredrik