Creating non-reverse-engineerable Java programs

Question

Is there a way to deploy a Java program in a format that is not reverse-engineerable?

I know how to convert my application into an executable JAR file, but I want t

Answer 1

You're writing in a language that has introspection as part of the core language. It generates .class files whose specifications are widely known (thus enabling other vendors to produce clean-room implementations of Java compilers and interpreters).

This means there are publicly-available decompilers. All it takes is a few Google searches, and you have some Java code that does the same thing as yours. Just without the comments, and some of the variable names (but the function names stay the same).

Really, obfuscation is about all you can get (though the decompiled code will already be slightly obfuscated) without going to C or some other fully-compiled language, anyway.