Why it's failed to load main-class manifest attribute from jar-file?

Posted by Roman on Stack Overflow See other posts from Stack Overflow or by Roman
Published on 2010-04-07T10:12:44Z Indexed on 2010/04/07 10:23 UTC
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I have created a jar file in this way jar cf jar-file input-files. Now I try to run it. This does not work: jre -cp app.jar MainClass (jre command is not found). This java -jar main.jar also does not work (Failed to load Main-Class manifest attribute from main.jar).

I also found out that

To run an application packaged as a JAR file (version 1.2 -- requires Main-Class manifest header)

What is the "Main-Class manifest header" how do I create it and where do I put it?

ADDED I made a mistake in my original question. The second command I tried was: java -jar main.jar.

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