<span>public</span> <span>static</span> <span>void</span> readXSSF(String filePath) <span>throws</span> IOException {
        <span>final</span> InputStream ExcelFileToRead = <span>new</span> FileInputStream(filePath);
        <span>final</span> XSSFWorkbook wb = <span>new</span> XSSFWorkbook(ExcelFileToRead);
        <span>final</span> Sheet sheet = wb.getSheetAt(<span>0</span>);
        Row row;
        Cell cell;
        <span>final</span> Iterator<Row> rows = sheet.rowIterator();
        <span>while</span> (rows.hasNext()) {
            row = rows.<span>next</span>();
            <span>final</span> Iterator<Cell> cells = row.cellIterator();
            <span>while</span> (cells.hasNext()) {
                cell = cells.<span>next</span>();
                <span>if</span> (cell.getCellType() == CellType.STRING) {
                    System.out.<span>print</span>(cell.getStringCellValue() + <span>'\t'</span>);
                } <span>else</span> <span>if</span> (cell.getCellType() == CellType.NUMERIC) {
                    System.out.<span>print</span>(cell.getNumericCellValue() + <span>"\t"</span>);
                }
            }
            System.out.<span>println</span>();
        }
        System.out.<span>println</span>(<span>"Already read all. "</span>);
    }

Đọc file này, thì thấy khá nhanh.