Main.java

import java.util.Scanner;
class Shape {
    double getArea() {
        return 0;  // Default
    }
}
class Rectangle extends Shape {
    double len, wid;

    Rectangle(double len, double wid) {
        this.len = len;
        this.wid = wid;
    }

    @Override
    double getArea() {
        return len * wid;
    }
}
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter length of rectangle: ");
        double len = sc.nextDouble();
        System.out.print("Enter width of rectangle: ");
        double wid = sc.nextDouble();
        Rectangle rect = new Rectangle(len, wid);
        System.out.println("Area of Rectangle: " + rect.getArea());
    }
}