如何从jar运行特定的Main类

Question

I have a jar file having 2 java classes both having Main methods. Is there a way I can specify while running the jar file, which class to call ? I know that manifest file can be modified to specify the Main class but since only one class can be mentioned, that does not help. I checked the below links, but those dint solve the problem:

https://stackoverflow.com/questions/5474666/how-to-run-a-class-from-jar-which-is-not-the-main-class-in-its-manifest-file

manifest-file execute a main class from a jar

It gives NoClassDefFoundError.

Answer 1

java -cp target/your_file.jar your.package.name.YourClass

Answer 2

Have a class that acts as a controller. In its main(), invoke other classes based on arguments passed. Add this as the Main-class in manifest

Answer 3

Write a Main class in which the main method calls the actual method depending on the command line argument passed. Add this Main class in the manifest.