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Error - "no main manifest attribute in jar"

Ben Terova

Joined: Aug 05, 2012
Posts: 3
I happen to be getting this error

"no main manifest attribute, in test.jar"

when my code is:

Any suggestions?

Thank you
AmanZeeK Verma

Joined: Dec 06, 2010
Posts: 29

How did you create your test.jar file ?

The META-INF folder inside jar has a file MANIFEST.MF which seems to be missing entry for main class

something like Main-Class: com.zeek.test.SomeClassName
Ben Terova

Joined: Aug 05, 2012
Posts: 3
I happened to have fixed the problem before you could reply, but I have another question, is it possible to start a seperate .jar within a .jar?
Paul Clapham

Joined: Oct 14, 2005
Posts: 19720

No. Or at least, some clever Java programmer could probably figure out some clever way of doing that, but there really isn't any point in doing it. At least, not if "to start a jar" means what you're doing at the command line when you type "java -jar thingy.jar".
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link:
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