How to avoid decompiling of Java jar

Hi,

I am using Eclipse to export runnable Java jar file. How can I avoid being decompiling?

Thanks
wsyyAsked:
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juliomaiquesCommented:
Look for Obfuscators in google ... it is what your are looking for :-D
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for_yanCommented:
http://www.excelsior-usa.com/articles/java-obfuscators.html

See good aarticle about java code obfuscators which conatins analusis about limitation fo java obfuscators and the linkls to the most popular open soucr and commercial obfuscators (see below towards the miDdle of the paper). With java yoiu casnnot gurantee impossiblity of dwcompilation but can make it much difficult
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for_yanCommented:
http://sourceforge.net/projects/proguard/files/  
This is download page of free proguard obfuscator
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