public List<String> readCaptionRow() {
        List<String> captions = new ArrayList<String>();
        HSSFSheet sheet = wb.getSheetAt(0);
        Iterator<Row> rowIt = sheet.iterator();
        Row row = rowIt.next();
        for (Cell cell : row) {
            captions.add(cell.getStringCellValue());
        }
        return captions;
    }