main method overloading or having more than one main method in a class

Yes, it is possible to have more than one main method but with different signature.

class a
{
 public static void main(String[] args)
 {
  System.out.println("hello");
  main(5);
  a object1 = new a();
  object1.main('a');
 }
 public static void main(int a)
 {
  System.out.println("call to static method from static method");
 }

 public void main(char c)
 {
  System.out.println("call to non-static method from static method can only be done through class reference");
 }
}

OUTPUT:

hello
call to static method from static method
 call to non-static method from static method can only be done through class reference