Class path for MAC

Hi All,
I am trying to set the classpath in a MAC OS and not able to get through. Can anyone tell me how to do it or at least any links to proper documentation?
Also I have few class files and it is working fine in Windows OS. Do I have to recompile separately for MAC OS?
I think we don�t have to compile separately for each OS. The reason I am asking this question for some reason I am not able to use in Mac OS.
Thanks for all your helps.

I am trying to set the classpath in a MAC OS and not able to get through. Can anyone tell me >how to do it or at least any links to proper documentation?I haven't compiled any code using MAC OS X. but i took my jar file of the application i made & ran it.It ran OK( actually better) without any change.
Also I have few class files and it is working fine in Windows OS. Do I have to recompile separately >for MAC OS?
I think we don�t have to compile separately for each OS. The reason I am asking this question for >some reason I am not able to use in Mac OS.No, you don't have to. but you must make sure that the directory structure is same if you have a package. i'm talking about MAC OS X only.

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Class path for MAC

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