MobVoc is a basic vocabulary trainer for small Java-enabled devices (mobile phones, CLDC-1.1/MIDP-2.0). It is ment as a replacement for paper based flashcards. MobVoc reads KVTML2 files produced by Parley and other KDE-Edu applications.
KMush is a simple MU* client intended for the K Desktop Environment. It is written in Java using the Qt Jambi bindings. Its intended use is for soft-coding and role-playing in MUSH environments.
Fortune displays random text messages that are intended to be fun. It uses the original fortune-mod text database, but has a user-friendly interface. You can download versions for Dos, Windows, Linux and a Java-version for any OS.
Kifupdown is a KDE/Java (Koala) frontend to the 'ifupdown' commands. It lives in the systray and is designed to be unobtrusive and work seamlessly with your existing network configuration.
jMCOP provides an easy way to develop multimedia applications in Java. It doesn't contain yet another implementation of common sound algorithms, but relies on the powerful aRts synthesizer to provide all the sound handling.