JiveTerm is a so-called "terminal emulator". If this term is unfamiliar to you, fret not -- think of it as something from era of slide rule, C-cassette and dinosaurs. That is, something that was used in the past, and is of interest to fossils like its author
Ok. Terminal emulators, like xterm, are things younger people call "shell windows" or "consoles"; or at least visual part of it. So JiveTerm is something like "xterm written in Java".
This is actually the very second or third Java thing I wrote, back in mid-to-late 90s. It was lots of fun and work to write; and back in the day was amazingly fast compared to other attempts at Java terminal emulators -- it actually run fine and smooth on a 60 Mhz pentium Linux box.