poi导出excel

static public void main(String[] args) throws Exception {
		FileOutputStream fos = new FileOutputStream("C:/_WORK/tt.xls");
		HSSFWorkbook wb = new HSSFWorkbook();
		HSSFSheet s = wb.createSheet();
		wb.setSheetName(0, "first sheet");
		HSSFRow row = s.createRow(0);
		HSSFCell cell = row.createCell(0);
		cell.setCellValue("Hello! This message is generated from POI.");
		wb.write(fos);
		fos.close();
	}