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  • 字符串相关工具类

    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;
        } 
        
        
    }
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  • 原文地址:https://www.cnblogs.com/sinosoft/p/11171261.html
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