Steganography tools for JPEG images
The code has been compiled in netbeans 7.2.1. Each folder is a separate project, e.g. J4. This code was written a few years back so it might not compile straight aways. You might get this error: package com.sun.image.codec.jpeg does not exist.
To resolve this, please specify an additional compiler option (under Project properties -> Build -> Compiling) -XDignore.symbol.file
Once, the code gets compiled successfully, you can run it from the command line or the code itself. The main class is RunSim.java.
A reference to the theory behind it is provided in my dissertation