Why the main program in Java is put into a class?

Question

Why does the main method have to be put into a class? I understand the main ideas of OOP but I cannot get why the main program is defined within a class. Will such a class i

Answer 1

It does simplify the design of the virtual machine. Since virtual machine already knows how to run a static method of a class then it can treat the main method just as any other static method.

If you put the main method in any other construct other than a class then the VM has to be modified to know about another construct complicating things even more.