Why has it failed to load main-class manifest attribute from a JAR file?

Question

I have created a JAR file in this way jar cf jar-file input-files. Now, I\'m trying to run it. Running it does not work (jre command is not found):

Answer 1

You can run with:

java -cp .;app.jar package.MainClass

It works for me if there is no manifest in the JAR file.