JCMP is a free java class compressor and java byte code optimizer (java
class Obfuscator).
It can:
 a.. optimize your code by reducing unnessessary load/store and goto
instructions
 b.. compress public/protected/private fields/methods to very short names
 c.. compress class names to short names
 d.. strip inner class information
 e.. strip debug information
 f.. If the file ends with extension .war, jcmp will treate it as a war
file.
Available at:

http://viscomp.utdallas.edu/FACADE/jcmp/
Please send bug report, feed back, feature requests to: gzhangx@hotmail.com

Gang