Obfuscator, or at least String Encrypter

[luca]

Hi there, I need a free obfuscator for a Java Servlet.
The main feature I am looking for is String Encryption.
Other onfuscating features are a plus. Should work with JDK 1.4 and 1.5.

Preaches about how pointless String Encryption is can be saved for another day.

Thanks

Luca