Biggest Digit

import java.util.Scanner;

public class BiggestDigit {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num, bigDigit = 0;
        System.out.println("Please enter a number: ");
        num = sc.nextInt();
        do {
            //Check if the next digit is bigger. Update bigDigit if so.
            bigDigit = bigDigit > num % 10 ? bigDigit : num % 10;
            num /= 10; // Omit the right digit
        } while(num > 0);// As long as there are digits
        System.out.printf("The biggest digit is: %d", bigDigit);
    }
}