Can we overload main method in Java?

Can. But only public static void main(String[] args) will be used when your class is launched by the JVM.

You can call other main() method yourself from code.

Eg.

class Simple{  
  public static void main(int a){  
  System.out.println(a);  
  }  

  public static void main(String args[]){  
  System.out.println("main() method invoked");  
  main(10);  
  }  
}

output:

main() method invoked
10

Can we override main method in Java?

No.

MAIN is a class method. Hence, it does not makes sense to “override” it (or any static method). The concept of “overriding” is only for instance methods.