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Java Decompiler

Posted on 2001-06-08
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Last Modified: 2012-05-04
Im looking for a free/shareware Java decompiler that will decompile code that contains invalid method names and things, like that produced by a obfuscator.

The reason being, I've been following the development of the client side of a game called RuneScape, seeing how problems have been overcome, and how the program is structured.

The author keeps updating the code regularly, and up till now my DJ Decompiler has worked fine.

But, when I come to decomile the file "mudclient.class" last night, my decompiler reports an invalid name!

The classes can be obtained from www.RuneScape.com, if you want to test out any decompiler that you reccommend, by using the files left in the Internet Temporary files folder after running the game.
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Question by:Lab_Rat
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mgaurav earned 50 total points
ID: 6169146
You can decompile a .class file using JAD (JAva Decompiler). You can download it from its home site.

 It will work fine provided the class does not have a native call to any library or shared object / DLL.

Master
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by:superschlonz
ID: 6169302
Hi Lab Rat

There are several other decompilers, for example mocha and jode.

Mocha:  http://www.brouhaha.com/~eric/computers/mocha.html
JODE:  http://jode.sourceforge.net/

And the Linux Decompiler HOWTO lists some more:

http://www.linux.org/docs/ldp/howto/Java-Decompiler-HOWTO-1.html

superschlonz
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Expert Comment

by:venkat2000120699
ID: 6169331
Have a look at the URL: http://www.cs.arizona.edu/~collberg/Research/Obfuscation/Resources.html

Hope, this will solve your problem.
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Expert Comment

by:objects
ID: 6169798
You do realise that what you are doing is probably illegal.
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Expert Comment

by:Nushi
ID: 6171608
hi Lab_Rat.

The program im using called frontEnd.
and its seems like the one you are looking for.

can be downloaded from
http://www.geocities.com/SiliconValley/Bridge/8617/jad.html#general 

but as object said:
its illegal to use it if its not your code or if it has copyrights.

Nushi.
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Expert Comment

by:mgaurav
ID: 6171666
The frontEnd uses JAD at the backend. But this is a simple and good one. I use this.

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by:Moondancer
ID: 6836595
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by:Lab_Rat
ID: 6863113
This is the program I currently use!
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