ICSE Java Programming Function Overload 2018 Q7

Question 7.

Design a class to overload a function volume() as follows : 

(i) double volume (double R) — with radius (R) as an argument, returns the volume of sphere using the formula.

V = 4/3 × 22/7 × R3

(ii) double volume (double H, double R) – with height(H) and radius(R) as the arguments, returns the volume of a cylinder using the formula.

V = 22/7 × R2 × H

(iii) double volume (double L, double B, double H) – with length(L), breadth(B) and Height(H) as the arguments, returns the volume of a cuboid using the formula.

import java.util.Scanner;

public class ICSEJava2018 {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        VolumeOfObjects obj = new VolumeOfObjects();

        int choice = 0;

        double R = 0, H = 0, B = 0;

        System.out.println("Press 1 to calculate the volume of a sphere:");

        System.out.println("Press 2 to calculate the volume of a cylinder:");

        System.out.println("Press 3 to calculate the volume of a cuboid:");

        choice = in.nextInt();

        switch (choice) {

            case 1:

                System.out.println("Enter the radius of the sphere:");

                R = in.nextDouble();

                System.out.println("Volume of the sphere:" + obj.volume(R)+" cubic units");

                break;

            case 2:

                System.out.println("Enter the radius of the cylinder:");

                R = in.nextDouble();

                System.out.println("Enter the height of the cylinder:");

                H = in.nextDouble();

                System.out.println("Volume of the cylinder:" + obj.volume(H, R)+" cubic units");

                break;

            case 3:

                System.out.println("Enter the length of the cuboid:");

                R = in.nextDouble();

                System.out.println("Enter the breadth of the cuboid:");

                H = in.nextDouble();

                System.out.println("Enter the height of the cuboid:");

                B = in.nextDouble();

                System.out.println("Volume of the cylinder:" + obj.volume(R, H,B)+" cubic units");

                break;

            default:

                System.out.println("Wrong Choice!");

                break;

        }

    in.close();

    }

}

class VolumeOfObjects {

    public double volume(double R) {

        return (4 * 22 * R * R * R) / (21);

    }

    public double volume(double H, double R) {

        return (22 * R * R * H) / 7;

    }

    public double volume(double L, double B, double H) {

        return (L * B * H);

    }

}