The core package contains the java implementation of the HEALPix Index. Look in the demo package for example usage. The library now include the 3D rendering package and a tool for explaining HEALPix.
An ant build file is provided in the src package for building the classes and javadocs.
If you intend to use the java healpix library, please drop an email to Emmanuel Joliet so that you can be notified of any updates, bugfixes, etc in the future.
Also, if you have any bugs to report or wishes on functionality etc., please write to Emmanuel.