Lucene is a Java full-text search engine. Lucene is not a complete application, but rather a code library and API that can easily be used to add search capabilities to applications.

Jakarta Regexp is a 100% Pure Java Regular Expression package that was graciously donated to the Apache Software Foundation by Jonathan Locke. He originally wrote this software back in 1996 and it has stood up quite well to the test of time. It includes complete Javadoc documentation as well as a simple applet for visual debugging and testing suite for compatibility.

JAR File Size and Download Location:

File name: jakarta-regexp.jar, jakarta-regexp-1.4.jar
File size: 28576 bytes
Date modified: 22-Nov-2005
Download: Apache Lucene

Manifest of the JAR:

List of Classes in the JAR:

org/apache/regexp/CharacterArrayCharacterIterator
org/apache/regexp/CharacterIterator
org/apache/regexp/RE
org/apache/regexp/RECompiler
org/apache/regexp/REDebugCompiler
org/apache/regexp/REDemo
org/apache/regexp/REProgram
org/apache/regexp/RESyntaxException
org/apache/regexp/RETest
org/apache/regexp/RETestCase
org/apache/regexp/REUtil
org/apache/regexp/ReaderCharacterIterator
org/apache/regexp/StreamCharacterIterator
org/apache/regexp/StringCharacterIterator
org/apache/regexp/recompile