ABSTRACT CLASS (Ria Suryani / 2012420033)

public abstract class Shape {

public abstract String nama();
public abstract float kell();
public abstract float luas();
}

import java.util.Scanner;
public class Circle extends Shape{
private int jarijari;

 public int getJarijari() {
        return jarijari;
    }
    public void setJarijari(int jarijari) {
        this.jarijari = jarijari;
    }
   public void jarijari(){
       System.out.print("Jari-jari "+nama()+": ");
       Scanner in=new Scanner(System.in);
       jarijari=in.nextInt();
   }
    @Override
public String nama(){
   String nama;
   nama="Lingkaran";
   return nama;
}
    @Override
public float kell(){
    float kell;
    kell=(float)(2*3.14*getJarijari());
    return kell;
}
    @Override
public float luas() {
float area;
area = (float) (3.14*getJarijari()*getJarijari());
return area;
}
}

import java.util.Scanner;
public class Square extends Shape{
  
private int sisi;

    public void sisi(){
        System.out.print("Sisi persegi: ");
        Scanner in= new Scanner(System.in);
        sisi = in.nextInt();
    }
    public int getSisi() {
        return sisi;
    }
    public void setSisi(int sisi) {
       
        this.sisi = sisi;
    }
    @Override
    public String nama() {
        String nama;
        nama="Persegi";
        return nama;
    }
    @Override
    public float kell() {   
        float kell;
        kell=4*getSisi();
        return kell;
    }
    @Override
    public float luas() {
        float luas;
        luas=getSisi()*getSisi();
        return luas;
    }
}

import java.util.Scanner;
public class Rectangle extends Shape {
    private int p, l;
    public void panjang(){
        System.out.print("Panjang "+nama()+" : ");
        Scanner in=new Scanner(System.in);
        p=in.nextInt();
    }
    public void lebar(){
        System.out.print("Lebar "+nama()+" : ");
        Scanner in=new Scanner(System.in);
        l=in.nextInt();
    }
    public int getP() {
        return p;
    }
    public void setP(int p) {
        this.p = p;
    }
    public int getL() {
        return l;
    }
    public void setL(int l) {
        this.l = l;
    }
    @Override
    public String nama() {
    String nama;
    nama="Persegi panjang";
    return nama;
    }
    @Override
    public float kell() {
        float kell;
        kell=2*(getP()+getL());
        return kell;
    }
    @Override
    public float luas() {
       float luas;
       luas=getP()*getL();
       return luas;
    }
}

public class AbstractMain {
    public static void main(String[] args) {
     Circle a=new Circle();
     a.jarijari();
     System.out.println("Keliling "+a.nama()+" adalah "+a.kell()+"\nLuas "+a.nama()+" adalah "+a.luas());
        System.out.println("");
       
     Square b=new Square();
     b.sisi();
     System.out.println("Keliling "+b.nama()+" adalah "+b.kell()+"\nLuas "+b.nama()+" adalah "+b.luas());
        System.out.println("");
       
     Rectangle c=new Rectangle();
     c.panjang();
     c.lebar();
     System.out.println("Keliling "+c.nama()+" adalah "+c.kell()+"\nLuas "+c.nama()+ " adalah "+c.luas());
    }
}

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Posted by arek informatika, Published at 02.10 and have 0 komentar