package com.finance.common.utils; public class IDCardUtils { public static void main(String[] args) { String idCardNumber = "110101199001011234"; String birthday = getBirthdayFromIdCard(idCardNumber); System.out.println("出生日期为:" + birthday); } public static String getBirthdayFromIdCard(String idCardNumber) { String birthday = idCardNumber.substring(6, 14); String year = birthday.substring(0, 4); String month = birthday.substring(4, 6); String day = birthday.substring(6, 8); return year + "-" + month + "-" + day; } }