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LZW Compression Algorithm Implemented in Java

By , 13 Aug 2006
 

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
Member
No Biography provided

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QuestionNice topic Pinmembersanya.fesak21 Sep '11 - 19:01 
Generallzw in matlab Pinmemberhana.rahmati30 Apr '10 - 22:14 
Questionalgorithm for n-queen Pinmemberhana.rahmati30 Apr '10 - 21:38 
GeneralI download your souce code and I have J creator and net beams install how do I run this file to test it PinmemberBulitpruf7 Aug '09 - 7:53 
GeneralRe: I download your souce code and I have J creator and net beams install how do I run this file to test it Pinmembermitesh355519 Jan '10 - 17:15 
Generalhelp me to implementing the "dynamic markov compression of C version" to Java (JSDK) and J2me version.. :( Pinmemberbytescode28 Apr '09 - 1:39 
QuestionCan you also provide the decompression method Pinmemberpakhtoon18 Nov '07 - 12:43 
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 
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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