How does java know what class to invoke the main() method of?

[Whovian]

In C++, pretty much any global main() function gets run. In C#, amy class's Main() method gets run, and having multiple Main() methods in multiple classes should give a compilation error(?). But if we have a .jar, when running it, how do we know which class's main() method the .jar will run?

 

[chiro]

Hey Whovian.

Actually for C and C++, you have to provide an entrypoint in many cases for different compilers and the 'main' is not always assumed to be main (although it is set by default to do this).

As for your question in Java, a quick google search gave this:

http://docs.oracle.com/javase/tutorial/deployment/jar/appman.html