Example: Greatest of Three Numbers using Math.max() in Java

// Greatest of Three Numbers using Math.max()
import java.util.Scanner; // Only needed for user input, Math class is built-in

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

        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 2: Use Math.max() to find the greatest number
        // First, find the max of num1 and num2
        int tempMax = Math.max(num1, num2);
        // Then, find the max of tempMax and num3
        int greatest = Math.max(tempMax, num3);

        // Alternatively, in a single line:
        // int greatest = Math.max(num1, Math.max(num2, num3));


        // Step 3: Print the greatest number
        System.out.println("The greatest number is: " + greatest);

        // Step 4: Close the scanner
        scanner.close();
    }
}