Java Static Внутренний класс

class MotherBoard {
   // static nested class
   static class USB{
       int usb2 = 2;
       int usb3 = 1;
       int getTotalPorts(){
           return usb2 + usb3;
       }
   }

}
public class Main {
   public static void main(String[] args) {
       // create an object of the static nested class
       // using the name of the outer class
       MotherBoard.USB usb = new MotherBoard.USB();
       System.out.println("Total Ports = " + usb.getTotalPorts());
   }
}
SAMER SAEID