JavaCC is a compiler compiler for Java.  It is similar to lex/yacc.  Your
output is a set of Java classes that can parse data defined by your grammar.

This includes JJTree, a preprocessor that greatly simplifies the construction
of abstract syntax trees.  Also included is JJDoc, a tool that can generate
documentation for your grammar.

WWW: http://www.webgain.com/products/java_cc/

- Andy Gerweck
gerweck@yahoo.com