用Java判断输入的数是几位数

package com.liushuo; import java.util.Scanner; public class Test12 { public static void main(String[] args) { // 从键盘输入一个0~99999之间的任意数，判断输入的数是几位数 Scanner input = new Scanner(System.in); int number = input.nextInt(); int count = 0; if (number < 0 || number > 999999) System.out.println("输入错误"); else { while (number > 0) { number = number / 10; count++; } System.out.println("输入的数是" + count + "位数"); } } }