VNC doesn't depend on Java. VNC are programs and a protocol for what amounts to remote desktop viewing/interaction. There are VNC *clients* that are written in Java. In fact there are a multitude of VNC clients for virtually any OS and device you can name. There was even a client for my dear old Palm Pilot (not that a tiny screen and 4 bit grey scale was all that useful )

What he is suggesting is using VNC to connect to a desktop PC which is has that Saber client software installed.