Maven Jar Builder: Could not find or load main class

Question

I have been trying for several days now to create an executable jar file for my muli-module maven project. However, when I try to run this jar file I get \"Could not find or

Answer 1

I'm going to necro this post because it is important to have 3 different things set properly:

1. MainClass.java needs to be in /src/main/java/com/domain/project/
2. Maven assembly plugin needs com.domain.project.MainClass
3. Your package should be set to com.domain.project

When those three match, Maven should package an executable JAR file.