15章解答4

import java.util.Scanner;public class Demo9 {public static void main(String[] args) {String nian,yue,ri;Scanner input = new Scanner(System.in);System.out.print("请输入用户的身份证号码:");String hao=input.next();if(hao.length()!=18){System.out.println("输入错误");}else{nian=hao.substring(6,10);yue=hao.substring(10,12);ri=hao.substring(12,14);System.out.println("\n该用户的生日是:"+nian+"年"+yue+"月"+ri+"日");}}}