OOP2 Inner Class (Java)

Class Induk

package contoh;

public class induk {

    public int penambahan (int a, int b) {

return a+b;

    }

    public int kali (int a, int b){

        anak x = new induk.anak();

return x.perkalian(a,b);

    }

        public class anak  {

            public int perkalian (int a, int b){

return a*b;

            }

public class cucu {

                    public int pengurangan (int a, int b){

return a-b;

                    }

                }// end class cucu

}// end class anak

    }// end class induk

main program
package contoh;
public class Contoh {
public static void main(String[] args) {
    induk x = new induk();
    System.out.println("Penambahan :"+ x.penambahan(5,5));
    System.out.println("Perkalian :"+ x.kali(10,5));  
    }
}