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.jar file in linux

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Hi everybody,
when I click on a jar file that I exported from eclipse, I get following error message:
the utility zip is not in your PATH
Please install it or contact your System Administrator.

I have no idea what's wrong here, are .jar files not supported in linux? What do I have to do?

ok, i figured i would have to use java -jar /filepath
the problem then is that it says failure to load main-Class manifest attribute
I dont know what's wrong, but under windows the app runs perfectly fine.

any help is greatly appreciated!

[ July 19, 2004: Message edited by: Ben Buchli ]
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Looks like META-INF/MANIFEST.MF has no Main-Class header.

Try jar xf filename.jar

In all, looks you don't have an executable jar.

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