How to hide classes in jar file

Question

How can I make a class inaccessible for the user that have my jar file. I saw that I can just extract the files from my jar file but they contain a info that I don't want the user to have.How can I make these files inaccessible?

Answer 1

Maybe this is what you are looking for: https://stackoverflow.com/questions/14492422/hiding-the-source-code-in-jar-files