Shapes project

Question

Can someone give me completed shapes project code? I dont know how to create it and its only project that missing..

Answer 1

import java.util.Scanner;

abstract class Shape {
int width;
abstract void area();
}
class Circle {
int x;
public Circle(int x){this.x=x;}
public void area(){
System.out.println(Math.PI*x*x);
}
}
class Square {
int x;
public Square(int x){this.x=x;}
public void area(){
System.out.println(x*x);
}
}

public class Program {
public static void main(String[ ] args) {
Scanner sc = new Scanner(System.in);
int x = sc.nextInt();
int y = sc.nextInt();

Square a = new Square(x);
Circle b = new Circle(y);
a.area();
b.area();
}
}