Choose and test java decompiler [closed]

Answer 1

Procyon has it's own comparison.

Answer 2

It looks like fernflower and JD Java Decompiler are producing decompiled code that is as good as is possible for this particular testcase. The other two aren't doing a good job, IMO.

What do you think, what code to write to test decompilers?

1. Write more complicated code using all available constructs.
2. Try them out on some real code.
3. Try them out on some real code that has been obfuscated.

When trying out code that you compile from source, experiment with different "-g" options, and with different Java compilers.

Answer 3

If you anticipate to get any meaningful results, you really should test with a bit more non-trivial code. Fernflower was created with the aim of handling highly unusual and obfuscated bytecode. Thus decompiling such simple snippets is no big deal. By the way, if you are interested in testing the stand-alone version of Fernflower drop me a note at fernflower(dot)decompiler(at)gmail(dot)com. Version 0.8.4 is now in semi-public beta (however not available on the website yet).