code: public String[] readDescription() {
      if (workbook.getNumberOfSheets() < 1) {
        return new String[0];
      } else {
        HSSFSheet sheet = workbook.getSheetAt(0);
        return readLine(sheet, headIndex);
      }
    }
docs: 描述放在第一行
  
  @return an array of {@link java.lang.String} objects.