(FAQ) - It'll even make a decent go of turning class files from other JVM languages back into java! To use, simply run the specific version jar, with the class name (s) you want to decompile (either ...

Initially a duo of decompilers were supported (JD-Core v0 & v1), but now other decompilers are supported with the transformer-api project. JD-Core v0 and v1 are 2 different decompilers rather than 2 ...