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"));
    }