How do i fix this illegal start of expression
import java.util.Scanner; abstract class Shape { int width; abstract void area(); } //your code goes here class Square extends Shape{ public int area2; public Square(int x) { width=x; } public void area() { area2=width*width; System.out.println(area2); } } class Circle extends Shape{ public double area1; public Circle(int y) { width=y; } public void area() { area1=Math.PI*width*; System.out.println(area1); } } 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(); } }