java 身份证15位转18位

 /**
        * 根据身份证号获取性别
        *
       * @param pid
        *            身份证号
        * @return 性别 F为女M为男
        */
      public static String getSexByPid(String pid)throws Exception{
          if(pid!=null&&(pid.trim().length()== 15||pid.trim().length()==18)){
              if(pid.trim().length()==15){
                  String pid18 = "";//pid15To18(pid);
                  if(Integer.parseInt(pid18.substring(16,17))%2==0){
                      return "女";
                  }else{
                      return "男";
                  }
              }else{
                  if(Integer.parseInt(pid.substring(16,17))%2==0){
                      return "女";
                  }else{
                      return "男";
                  }
              }
          }else{
              return null;
          }
     }

      /**
       * 15位身份证 转18位
       * lsp  2017年1月19日13:47:52
       * @param fifteenIDCard
       * @return
       * @throws Exception
       */
     public static String getEighteenIDCard(String fifteenIDCard) throws Exception {
         if (fifteenIDCard != null && fifteenIDCard.length() == 15) {
             StringBuilder sb = new StringBuilder();
             sb.append(fifteenIDCard.substring(0, 6)).append("19").append(
                     fifteenIDCard.substring(6));
             sb.append(getVerifyCode(sb.toString()));
             return sb.toString();
         } else {
             throw new Exception("不是15位的身份证");
         }
     }

     /**
      *  获取身份证的校验码
      *  lsp  2017年1月19日13:47:52
      * @param idCardNumber
      * @return
      * @throws Exception
      */
     public static char getVerifyCode(String idCardNumber) throws Exception {
         if (idCardNumber == null || idCardNumber.length() < 17) {
             throw new Exception("不合法的身份证号码");
         }
         char[] Ai = idCardNumber.toCharArray();
         int[] Wi = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
         char[] verifyCode = { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3',
                 '2' };
         int S = 0;
         int Y;
         for (int i = 0; i < Wi.length; i++) {
             S += (Ai[i] - '0') * Wi[i];
         }
         Y = S % 11;
         return verifyCode[Y];
     }

     public static void main(String[] args) throws Exception {
         System.out.println(getEighteenIDCard("330324360802695"));
     }