Java: Compare two numbers

Java Basic: Exercise-32 with Solution

Write a Java program to compare two numbers.

Test Data:
Input first integer: 25
Input second integer: 39

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.Scanner;

public class Exercise32 {
    public static void main(String args[]) {
        // Create a Scanner to obtain input from the command window
        Scanner input = new Scanner(System.in);
        int number1; // First number to compare
        int number2; // Second number to compare

        // Prompt the user to input the first integer
        System.out.print("Input first integer: ");
        number1 = input.nextInt(); // Read the first number from the user

        // Prompt the user to input the second integer
        System.out.print("Input second integer: ");
        number2 = input.nextInt(); // Read the second number from the user

        // Compare and display the results
        if (number1 == number2)
            System.out.printf("%d == %d\n", number1, number2);
        if (number1 != number2)
            System.out.printf("%d != %d\n", number1, number2);
        if (number1 < number2)
            System.out.printf("%d < %d\n", number1, number2);
        if (number1 > number2)
            System.out.printf("%d > %d\n", number1, number2);
        if (number1 <= number2)
            System.out.printf("%d <= %d\n", number1, number2);
        if (number1 >= number2)
            System.out.printf("%d >= %d\n", number1, number2);
    }
}
  

Explanation:

In the exercise above –

• First, it uses the "Scanner" class to obtain input from the command window (user input).
• It declares two integer variables 'number1' and 'number2' to store the two numbers provided by the user.
• It prompts the user to input the first integer using System.out.print("Input first integer: ") and reads the input into 'number1'.
• It prompts the user to input the second integer using System.out.print("Input second integer: ") and reads the input into 'number2'.
• Next it performs a series of comparisons using if statements and prints the results using System.out.printf():
• if (number1 == number2) checks if 'number1' is equal to 'number2' and prints a message if they are equal.
• if (number1 != number2) checks if 'number1' is not equal to 'number2' and prints a message if they are not equal.
• if (number1 < number2) checks if 'number1' is less than 'number2' and prints a message if 'number1' is less than 'number2'.
• if (number1 > number2) checks if 'number1' is greater than 'number2' and prints a message if 'number1' is greater than 'number2'.
• if (number1 <= number2) checks if 'number1' is less than or equal to 'number2' and prints a message accordingly.
• if (number1 >= number2) checks if 'number1' is greater than or equal to number2 and prints a message accordingly.

Sample Output:

Input first integer: 25                                                                                       
Input second integer: 39                                                                                      
25 != 39                                                                                                      
25 < 39                                                                                                       
25 <= 39 

Flowchart:

Java Code Editor:

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