As of 2012-04-05, this project may now be found at https://github.com/ivmai/jadretro/.
JadRetro is a Java decompiler helper supporting Java 1.5+ classes. JadRetro is not a decompiler itself, it is a class transformer helping some old (but good) Java decompilers to convert more class files and/or generate more correct source code.
Very good Software.
Stable and works.
Great product jadretro
simple and straight forward to use