http://jd.benow.ca/ this one is really excellent! Code available here https://github.com/java-decompiler/jd-gui
I have also used several times http://www.javadecompilers.com/ this online decompiler (CFR version) and it's pretty cool.
See also my old post here
I have also used several times http://www.javadecompilers.com/ this online decompiler (CFR version) and it's pretty cool.
See also my old post here