Example: Greatest of Three Numbers using if-else if-else in Java

// Greatest of Three Numbers using if-else if-else
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Create a Scanner object to read input from the console
        Scanner scanner = new Scanner(System.in);

        // Step 2: Prompt the user to enter three numbers
        System.out.print("Enter the first number: ");
        int num1 = scanner.nextInt();

        System.out.print("Enter the second number: ");
        int num2 = scanner.nextInt();

        System.out.print("Enter the third number: ");
        int num3 = scanner.nextInt();

        // Step 3: Use if-else if-else to find the greatest number
        int greatest;
        if (num1 >= num2 && num1 >= num3) {
            greatest = num1;
        } else if (num2 >= num1 && num2 >= num3) {
            greatest = num2;
        } else {
            greatest = num3;
        }

        // Step 4: Print the greatest number
        System.out.println("The greatest number is: " + greatest);

        // Step 5: Close the scanner to prevent resource leaks
        scanner.close();
    }
}