Answer to Question #286055 in Java | JSP | JSF for Hamza

Question

Task #5: Writing value returning Method

In this task, you are being asked to write value returning method in Java.

Your job is to write a program which will take two integer numbers as input and returns:

 0, if both numbers are equal.

 1, if first number is greater than second number.

 -1, if first number is less than second number. 

You may use the following header for this method:

static int compare(int firstNumber, int secondNumber)

Take input from the user, call the method and print the appropriate messages according to the 

result.

1. Create a program called CompareNumberLab1.java. 

2. Create appropriate variables and assign values using a Scanner object.

3. Correctly display appropriate messages.s

Answer 1

import java.util.InputMismatchException;
import java.util.Scanner;


public class CompareNumberLab1 {
    private static int compare(int firstNumber, int secondNumber) {
        if (firstNumber > secondNumber) {
            return 1;
        } else if (firstNumber < secondNumber) {
            return -1;
        } else {
            return 0;
        }
    }


    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);


        int firstNumber, secondNumber;


        System.out.println("Enter first number:");
        while (true) {
            try {
                firstNumber = input.nextInt();
                break;
            } catch (InputMismatchException e) {
                System.out.println("The entered number is incorrect, please try again...");
                input.next();
            }
        }


        System.out.println("Enter second number:");
        while (true) {
            try {
                secondNumber = input.nextInt();
                break;
            } catch (InputMismatchException e) {
                System.out.println("The entered number is incorrect, please try again...");
                input.next();
            }
        }


        int comparison = compare(firstNumber, secondNumber);
        switch (comparison) {
            case 0:
                System.out.println("Both numbers are equal!");
                break;
            case -1:
                System.out.println("First number is less than second number!");
                break;
            case 1:
                System.out.println("First number is greater than second number!");
                break;
        }
    }
}