CFR 0.139

CFR is a command-line tool to decopile Java code from class files or Jar files. CFR will decompile modern Java features - Java 8 lambdas (pre and post Java beta 103 changes), Java 7 String switches etc, but is written entirely in Java 6.

To use, simply run with the class name you want to decompile (either as a path to a class file, or as a fully qualified classname on your classpath), and optionally the method name. (--help to list arguments). Alternately, to decompile an entire jar, simply provide the jar path, and if you want to emit files (which you probably do!) add --outputdir /tmp/putithere.

See project page or FAQ for more details.