How do you find the main class in a jar?

It is simple.

xml specify the main class in the manifest file. To add the main class info in manifest file we need to add maven-jar-plugin in pom. xml file and specify the main class info .23 Haz 2017

In this tutorial, we discuss how to run main method of Java class in your project with or without arguments using Maven command.

Technically a jar file can contain more than one main class. When java executes a jar file, it looks in the META-INF/MANIFEST. MF file inside the jar to find the entrypoint. There is no direct command to get this information, but you can unpack the jar (it’s just a zip file) and look into the manifest yourself .