DrJava

A lightweight development environment for writing Java programs.

Details

The Doctor is in. Designed for students, DrJava provides an intuitive interface for evaluating Java code on an interactive basis. Free and open source, DrJava also has more powerful features for more advanced users. And DrJava is continually being developed by the JavaPLT group at Rice University to ensure the best performance.

by JavaPLT at http://drjava.org/