How can I hide the class file ??

Hi !
I has a question, when i write a program of Java, then use the command "javac" to compiler to class file for other people using, but the class file can be disassembled and convert to source code. How can I hide the class file and let people can not disassemble, or can not see the source code. Thinks

See these....
http://www.saffeine.com/
http://www.jarsafe.com/
I recently read this. This will help you.
http://developer.java.sun.com/developer/qow/archive/160/index.jsp
Enojy....
Rajesh

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