Question

I’ve seen jquery.min.js and some CSS files with all unnecessary whitespace removed from them. Is there a tool available to do same with Java source for obfuscation purposes?

Answer 1

yeah, I wanna unreadable

You shouldn’t need to provide the original source, you would compile it to byte code as this can be run on any Java platform.

The byte code for compiled code is already difficult to read but it can be decompiled. You can make it difficult to decompile with a byte code obfuscator.

There are several (commercial and free)

https://www.google.co.uk/search?q=java+obfuscator

This changes the byte in ways that the JVM can read but is not easily read as the original Java or produce compileable code. e.g. turn fields names into numbers etc.

BTW: You can always reverse engineer the code, but you can make it harder to do.