We now have instructions on how to use DrJava with the
AP CS GridWorld Case Study on our website at
Pre-made DrJava project files are also available.
DrJava is a lightweight programming environment
for Java designed to foster test-driven software
development. It includes an intelligent program editor,
an interactions pane for evaluating program text, a
source level debugger, and a unit testing tool.
Available for download at http://drjava.org .