Why does this code not run (for hidden case 3 it shows cross)

Question

import java.util.Scanner;
import java.lang.Math ;

abstract class Shape {
int width;
abstract void area();
}
//your code goes here
class Circle extends Shape {
Circle(int a){
width = a;
}
void area (){
System.out.println(
width * width * Math.PI
);
}
}
class Square extends Shape {
Square (int a){
width = a ;
}
void area (){
System.out.println(
width * width
);
}
}

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();
}
}

Answer 1

Shubham Bawner , look here https://www.sololearn.com/Discuss/2633532/?ref=app