Java Puzzle

Question

Need help discussing approach to this

Answer 1

You are working on a graphical app, which includes multiple different shapes.
The given code declares a base Shape class with an abstract area() method and a width attribute.
You need to create two Shape subclasses, Square and Circle, which initialize the width attribute using their constructor, and define their area() methods.
The area() for the Square class should output the area of the square (the square of the width), while for the Circle, it should output the area of the given circle (PI*width*width).
The code in main creates two objects with the given user input and calls the area() methods.

Sample Input:
5
2

Sample Output:
25
12.566370614359172

The area of the square is 5*5=25, while the area of the circle is PI*2*2=12.566370614359172

Answer 2

import java.util.Scanner;

abstract class Shape {
int width;
abstract void area();
}
//your code goes here

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 3

What you need is to learn about inheritence.
And define Circle, Square classes which will have method area() which print the area of shape. Remaining code is given predifinedly.

Answer 4

Ok so i extend the shape class, and use a constant variable area

Answer 5

ahh use super. method thanks

Answer 6

Extend shape class and use super class variable width in overriding area() method to display area value..