java cracking

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Originally Posted by ChupaChu;70134I used IDA to disassemble a class file...
...[url

http://en.wikipedia.org/wiki/Java_bytecode_instruction_listings[/url]

A few weeks ago I used the same method; and still prefer patching instead of recompiling that requires installing seldom used bloatware.
DJ (http://www.neshkov.com/dj.html) has bytecode, sourcecode, and hex views, unfortunately those aren't synchronized (like the source/hex views in IDA).
Some good info on Java decompilers is at http://strategoxt.org/Transform/JavaDecompilers

Regards