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LZW Compression Algorithm Implemented in Java

By , 13 Aug 2006
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Introduction

I recently had the opportunity to look into compression for a project. I had to implement the Lempel-Ziv-Welch (LZW) algorithm for mobile phones in J2ME but before that, I implemented it in Java for testing purposes.

I wish to thank Mark Nelson for pointing out that the Unisys patent on this algorithm has expired, so there are fewer headaches in the use of this algorithm.

Description

This implementation is actually based on the C version of the implementation by Mark Nelson at http://marknelson.us/1989/10/01/lzw-data-compression/. Please refer to this website for further details about the algorithm. The Java adaptation is designed to work for ASCII encoded text files.

History

  • 13th August, 2006: Initial post

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

fahadkhowaja
Web Developer
Singapore Singapore
No Biography provided

Comments and Discussions

 
AnswerRe: Can you also provide the decompression method Pinmembermanishaswati30-Aug-08 3:26 
AnswerRe: Can you also provide the decompression method Pinmemberduraigowardhan1-Oct-09 5:05 
QuestionRe: Can you also provide the decompression method Pinmemberskumarmails17-Jan-10 22:47 
AnswerRe: Can you also provide the decompression method Pinmemberguyver.nihilith14-Feb-10 5:24 
QuestionTABLE_SIZE PinmemberGordonMorgan4-May-07 5:55 
Generalurgent Pinmembersimarjeet26-Apr-07 5:47 
GeneralRe: urgent PinmemberKusmadi Cakep8-Jan-10 20:35 
GeneralJ2ME for LZW Pinmemberfur12820-Mar-07 4:32 
GeneralRe: J2ME for LZW Pinmembered welch3-Jun-07 7:47 
GeneralLZW in VC++ Pinmembermannur28-Feb-07 4:27 
Generalrequest Pinmemberrancidbondut19-Feb-07 8:03 
GeneralRe: LZW for J2ME Pinmemberfahadkhowaja16-Feb-07 2:09 
Generallzw for j2me Pinmemberscntuan10-Sep-06 7:26 
Hi
Do you have a j2me version of lzw ? Your current version just works well on j2se.
Thanks
GeneralCongratulations and to follow !!! PinmemberPipa_Soft15-Aug-06 5:41 
GeneralRe: Congratulations and to follow !!! Pinmemberpakhtoon18-Nov-07 12:47 
GeneralRe: Congratulations and to follow !!! Pinmemberskumarmails17-Jan-10 22:34 
Generallzw copyright Pinmembersnorkelman13-Aug-06 7:33 
GeneralRe: lzw copyright Pinmemberfahadkhowaja13-Aug-06 7:47 

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