Autojar creates jar archives of minimal size from different sources (classes, directories, libraries). Starting from one or more classes, it scans the bytecode recursively for other classes, extracts them from their archives if necessary, and adds them to the output file. The resulting archive contains only classes that are really needed. Thus the size and loading time of applets can be kept low, and applications can be made self-contained.
In a similar way, Autojar can search directories and archives for other resources (like image files), extract them and copy them to the output.
See Other Best Installers Projects in Java:
7