I'm happy to announce the first working usable application for Java on Amiga: a telnet-client.
What can be seen is the class "org.jamiga2.jta.JTAConsole" telnetting into my Mac. It's really slow at the moment, but that's due to the extensive logging, and currently my Mac's login credentials are hardcoded in the Java file. And when quitting, one of the Java processes crashes due to some memory I might be freeing too many times. But besides that: it's alive!
What's left to do, is everything else. Fix the crash, try out real SSH, fix the client from proof-of-concept status into a real SSH client, and lots of other stuff. But it's really nice to see something usable actually running.