I\'ve read from the apt tool page that one can create AnnotationProcessors to generate new derived files (source files, class files, deployment descriptors, etc.). I am looking
Zelix KlassMaster offers this ability. If memory serves, it used to be free for companies under 3 developers, but I just checked their purchase page, and it seems that they now charge a small-developers fee for small companies. I haven't used it in several years (at least 5 or 7), but it did a fantastic job obfuscating strings, and code in general.