codeKitchens.jar from headFirstJava website

Why I can't do
c:\> java -jar codeKitchens.jar
?

I got message:
Failed to load Main-Class manifest attribute from
codeKitchens.jar

How I can break that jar?

Thnx

in windows use open with winzip

jar tvf codeKitchens.jar will list the contents of the jar.

What the heck I can solve my noob proble expeditiously!!!

Thank you so much

You cannot run the JAR file because it wasn't created to do so. I suspect that it contains many separate examples and is not meant to be run as a single program. To run the individual examples, you can use

jar xvf codeKitchens.jar

to extract them first. Then you probably need to compile and run each one separately.

HTH

Layne

If the codeKitchens.jar has the only one main class, you can add Main-Class: classname to the JAR file's manifest and run using java -jar codeKitchens.jar.