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JavaCC Home
Java Compiler Compiler [tm] (JavaCC [tm]) - The Java Parser Generator
Java Compiler Compiler [tm] (JavaCC [tm]) is the most popular parser
generator for use with Java [tm] applications. A parser generator is a
tool that reads a grammar specification and converts it to a Java
program that can recognize matches to the grammar. In addition to
the parser generator itself, JavaCC provides other standard capabilities
related to parser generation such as tree building (via a tool
called JJTree included with JavaCC), actions,
debugging, etc.
We've had hundreds of thousands of downloads and estimate serious
users in the many thousands (and maybe even tens of thousands). Our
newsgroup comp.compilers.tools.javacc and our mailing list together have a few thousand
participants.
JavaCC works with any Java VM version 1.2 or greater. It has been
certified to be 100% Pure Java. JavaCC has been tested on countless
different platforms without any special porting requirements. Given
that we have seen JavaCC run on only around 5 or 6 platforms, we think
this is a great testimonial to the "Write Once Run Anywhere" aspect of
the Java programming language. We say this as engineers who have personally experienced the
benefits of writing Java applications.
Getting the Software
Download JavaCC 5.0 (older versions are here).
Third party contributions
An excellent FAQ is maintained
by Theo Norvell at Memorial University of Newfoundland.
A repository of
JavaCC grammars is being maintained on the JavaCC home page. We
urge you to contribute your grammars to this repository or to the
JavaCC authors for the benefit of others.
Feature Highlights:
A short description of the features of JavaCC.
Installation and Getting Started:
This page contains a bunch of tips
that should aid you through the installation process.
Documentation:
The complete documentation for JavaCC.
Lexer writing tips:
Tips for writing good JavaCC lexical analyzer specs. This can also help
you if you are getting 'code size too big' error message from javac when
you compile the generated token manager.
Getting Support and Keeping In Touch:
Here's how you can contact us and keep in touch with what's happening.