Java - Method Overriding - Area

 Coding Problem Keys 

 Java - Method Overriding - Area 

 Problem Statement 

The main method in Hello.java is given below.

import java.util.Scanner;

public class Hello {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int side = scan.nextInt();
        Square square = new Square(side);
        Square cube = new Cube(side);
        System.out.println(square.getArea());
        System.out.println(cube.getArea());
    }
}

Please fill in the missing lines of code for the class Square.java and Cube.java so that the program prints the output as mentioned below.

Area of Square = a², Area of Cube = 6a²

 Example Input/Output 

 Input 

5

 Output 

25

150

 Note: Max Execution Time Limit: 5000 millisecs 

 Solution 

 Programming Language: Java Language 

 Square.java 

class Square {
    int num, a;
    Square(int n) {
        num = n;
        a = num*num;
    }
    public int getArea() {
        return num*num;
    }
}

// Published By PKJCODERS

 Cube.java 

class Cube extends Square {
    int b;
    Cube (int n) {
        super(n);
        b = a*a;
    }
    public int getArea() {
        return a*6;
    }
}

// Published By PKJCODERS

 (Note: Incase If the code doesn't Pass the output kindly comment us with your feedback to help us improvise.)