Wrong Manifest.mf in IntelliJ IDEA created .jar

Question

I\'m trying to package a project using OptaPlanner 6.0.1 libraries into a .jar through IntelliJ IDEA\'s jar artifact but instead of my manifest.mf containing the standard

Answer 1

To have no problem like Manifest, you should have a directory named "META-INF" in "src" directory. So, create it and put a file named "MANIFEST.MF" in it with the following contents:

Manifest-Version: 1.0
Main-Class: .Main

Not to forgot to replace the package's name containing Main class above!