打印给定数字中的最大数字- Java

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入一个数字：");
        int number = scanner.nextInt();
        int maxDigit = findMaxDigit(number);
        System.out.println("最大数字是：" + maxDigit);
    }

    public static int findMaxDigit(int number) {
        int maxDigit = 0;
        while (number > 0) {
            int digit = number % 10;
            if (digit > maxDigit) {
                maxDigit = digit;
            }
            number /= 10;
        }
        return maxDigit;
    }
}