Lightweight regular expressions pattern matcher. [Open Source, BSD-like]

A language for validating XML documents. Tutorial, specification and sample implementation in Java.

A set of text-processing classes that provide Perl5 compatible regular expressions, AWK-like regular expressions, glob expressions, and utility classes for performing substitutions, splits, and filtering filenames. This library is the open source succ...

A lesson explains how to use the java.util.regex API for pattern matching with regular expressions. Although the syntax accepted by this package is similar to the Perl programming language, knowledge of Perl is not a prerequisite. This lesson starts w...

Provides a package to perform Regular Expressions in Java. Documentation and download including source.

Regular expression support that offers a superset of Perl5.6 regex syntax, compatibility with JDK 1.1). Includes documentation, examples, and demonstration applet. [Open Source, BSD-like]

A package that provides a mechanism for compiling and matching regular expressions in Java. Download, documentation and news.

Applets reads simple regular expressions and builds a state machine that recognizes regular expression. Provided source code is appropriate for educational purposes.

Pure Java implementation of a traditional (non-POSIX) NFA regular expression engine. Its syntax can emulate many popular development tools, including awk, sed, emacs, perl and grep. [Open Source, LGPL]

A regular expression API for textual pattern matching based on the finite state automaton theory written in Java. It also offers set operations (union, intersection, difference, complement) for combination of automatons. [Open source, LGPL]