package com.taiping.ecms.car.utils;import java.util.Calendar;import java.util.Date;/** * 字符串相关工具类 * @author Alex * */public class StringUtils {        /**     * 格式化字符串第一个字符为大写     * @param field     * @return     */    public static String upperFirstString(String field){        if(field.length() <= 0 || field == null){            return field;        }        String firstLetter = field.substring(0, 1).toUpperCase();            String formatString = firstLetter + field.substring(1);                         return formatString;    }        /**     * 功能:在判定已经是正确的身份证号码之后,查找出此人性别     * @param idCard-身份证号码     * @return 1-男或者 2-女     */    public static String getSex(String idCard) {        String sex = "";        if (idCard.length() == 15) {            sex = idCard.substring(idCard.length() - 3, idCard.length());        } else {            sex = idCard.substring(idCard.length() - 4, idCard.length() - 1);        }        int sexNum = Integer.parseInt(sex) % 2;        if (sexNum == 0) {            return "2";        }        return "1";    }     /**     * 根据出生日期获取年龄     * @param birthDay     * @return     * @throws Exception     */    public  static int getAge(Date birthDay) throws Exception {         Calendar cal = Calendar.getInstance();         if (cal.before(birthDay)) {             throw new IllegalArgumentException(                 "The birthDay is before Now.It's unbelievable!");         }         int yearNow = cal.get(Calendar.YEAR);         int monthNow = cal.get(Calendar.MONTH);         int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);         cal.setTime(birthDay);           int yearBirth = cal.get(Calendar.YEAR);         int monthBirth = cal.get(Calendar.MONTH);         int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);           int age = yearNow - yearBirth;           if (monthNow <= monthBirth) {             if (monthNow == monthBirth) {                 if (dayOfMonthNow < dayOfMonthBirth) age--;             }else{                 age--;             }         }         return age;     }    /**     * 功能:在判定已经是正确的身份证号码之后,查找出此人出生日期     * @param idCard-身份证号码     * @return 出生日期 XXXX MM-DD     */      public static String getBirthday(String idCard) {        String Ain = "";        if (idCard.length() == 18) {            Ain = idCard.substring(0, 17);        } else if (idCard.length() == 15) {            Ain = idCard.substring(0, 6) + "19" + idCard.substring(6, 15);        }        String strYear = Ain.substring(6, 10);// 年份        String strMonth = Ain.substring(10, 12);// 月份        String strDay = Ain.substring(12, 14);// 日期        return strYear + "-" + strMonth + "-" + strDay;    }         }