On giga, exa, or peta. cd to a directory on your path.
Type
ln -s /usr/local/JavaCC/bin/* .
rehash
If you do not own any directory on your path, you should --
create one and change your .cshrc file to put it on your path.
All the files for my subset parser are in ~theo/pub/se/Grammar/. Copy them to your own directory. (Use cp -R .) Read the README.txt file, for further instructions.