Program OOP (Object Oriented Programing)

Program OOP

class A {

                int i;

                int j;

                static int s;

                void show_ij() {

                                System.out.println("i dan j = " + i + " " + j);

                }

                void show_s() {

                                System.out.println("s = " + s);

                }

}

class B extends A {

                int k;

                void show_k() {

                                super.show_ij();

                                System.out.println("k = " + k);

                }

                void sum_all() {

                                System.out.println("i + j + k = " + (i + j + k));

                }

}

public class Inheritance {

                public static void main(String[] args) {

                                A bapak = new A();

                                B anak1 = new B();

                               

                                bapak.i = 13;

                                bapak.j = 17;

                                System.out.println("Objek A -> objek superclass dari B : ");

                                bapak.show_ij();

anak1.i = 9;

                                anak1.j = 10;

                                anak1.k = 11;

                                System.out.println("Objek B -> objek turunan dari A : ");

                                anak1.show_ij();

                                anak1.show_k();

                                anak1.sum_all();

                }

}