Possible Duplicate:
Is it worth to obfuscate java web application?
I have writen an applet. I don't want other people to decompile it using easily availabe decompilers. I have taken lots of pains to implemented the code. Can anyone suggest how I can protect my applet from geting decompiled?
You could always try to use an obfuscator like Proguard or yGuard, but resistance if almost always futile.
With a proper tool, like Java Decompiler, and enough time and expertise, your code will be broken.