Cay Horstmann's website for GridWorld:
The Student Manual
Also, for those who may find it more handy, here are the ZIP files that have the JAR files, the JavaDoc and the source.
Official AP Version: ap06_compsci_GridWorld_Code.zip (236.71K)
Number of downloads: 350
Unofficial Version: GridWorldCode.zip (238.55K)
Number of downloads: 194
This post has been edited by Dogstopper: 23 September 2010 - 07:21 PM