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- class bangunDatar{
- float luas() {
- System.out.println("Menghitung luas bangun datar");
- return 0;
- }
- float keliling() {
- System.out.println("Menghitung keliling bangun datar");
- return 0;
- }
- }
- class persegi extends bangunDatar{
- float sisi;
- // override
- float luas() {
- float luas = sisi * sisi;
- System.out.println("Luas persegi:" + luas);
- return luas;
- }
- // override
- float keliling() {
- float keliling = 4 * sisi;
- System.out.println("Keliling persegi:" + keliling);
- return keliling;
- }
- }
- class persegiPanjang extends bangunDatar{
- float panjang;
- float lebar;
- // override
- float luas() {
- float luas = panjang * lebar;
- System.out.println("Hitung luas:"+ luas);
- return luas;
- }
- // override
- float keliling() {
- float keliling = 2*panjang + 2*lebar;
- System.out.println("hitung keliling:"+ keliling);
- return keliling;
- }
- }
- public class pewarisan{
- public static void main(String[] args) {
- bangunDatar bD = new bangunDatar();
- persegi p = new persegi();
- persegiPanjang pP = new persegiPanjang();
- p.sisi = 4;
- pP.panjang = 10;
- pP.lebar = 6;
- bD.luas();
- bD.keliling();
- p.luas();
- p.keliling();
- pP.luas();
- pP.keliling();
- }
- }
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