Jagacy - A 3270 screen-scraping library written entirely in Java. It also includes a special 3270 emulator designed to help create screen-scraping applications. [Commercial] - http://www.jagacy.com
GNU Readline for Java - Java-Native-Interface wrapper to readline for every platform supporting the readline, history and termcap libraries. [Open Source, LGPL] - http://java-readline.sourceforge.net/
Jcurzez - A lightweight clone of curses written in Java, which allows moving the cursor, and changing background and foreground colors in text mode. [Open Source, LGPL] - http://www.nongnu.org/jcurzez/
Charva - A library of Java classes that allows a Java application to display a "graphical" user interface, composed of elements such as windows, dialogs, textfields and buttons, on a traditional character-mode ASCII terminal. [Open Source, LGPL] - http://www.pitman.co.za/projects/charva/