.jar file error "could not find or load main class" with IntelliJ-CodePudding

The

The MainBot.class file is there! The manifest file in the META-INF/ folder looks like this:

Manifest-Version: 1.0 Main-Class: MainBot

And the the META-INF folder looks like this:

What did I do wrong? When exporting, I select the correct main file in INTELLIJ, add the META-INF directory to resources/ and then I build my artifact. How come that The MainBot file cannot be found, when it is there?! I also tried playing arond with the MAINFEST.MF file and tried changing the Main-Class to ../MainBot or something, but none of that worked.

EDIT: This is the artifact under Project Structure | Artifacts

CodePudding user response：

I attempted to reproduce the error using a

CodePudding user response：

The META-INF folder in your generated Jar has these 2 files -

SIGNINGGC.RSA SIGNINGGC.SF

I assume that you are not signing the Jar. Then, these files must be coming from one of your dependancies when you are creating a Fat Jar. If any of your dependancies has a Signed Jar, then it could result into that could not find or load main class: exception.

You can quickly find if this is the issue by removing those files with this command (referenced from