如何使用Java POI生成Excel表文件

   private static void WriteExcel2010() throws IOException {
        String path="C:\\poi2.xlsx";
        XSSFWorkbook workbook=new XSSFWorkbook();
        XSSFSheet sheet=workbook.createSheet("我的Sheet");

        XSSFRow row=sheet.createRow(0);
        XSSFCell cell=row.createCell(0);
        cell.setCellValue("我是POI写入的");

        XSSFRow row1=sheet.createRow(1);
        XSSFCell cell1=row1.createCell(0);
        cell1.setCellValue("2010");

        FileOutputStream outputStream=new FileOutputStream(path);
        workbook.write(outputStream);
        outputStream.close();
    }

    private static void WriteExcel2003() throws IOException {
        String path="C:\\poi2.xls";
        HSSFWorkbook workbook=new HSSFWorkbook();
        HSSFSheet sheet=workbook.createSheet("我的Excel");
        HSSFRow row=sheet.createRow(0);
        HSSFCell cell=row.createCell(0);
        cell.setCellValue("我是POI写入的");
        FileOutputStream outputStream=new FileOutputStream(path);
        workbook.write(outputStream);
        outputStream.close();
    }

必须用poi么？？ 我有个jxl的