Show a XLS file in a web application

if someone more needs it I could solve it by myself.

I just create a servlet and in its post method after i just compiled, filled and run, the report i did:
OutputStream out = response.getOutputStream();
File xls = new File(fileName);
InputStream in = new FileInputStream(xls);
HSSFWorkbook wb = new HSSFWorkbook(in);
response.setContentType("application/vnd.ms-excel");
wb.write(out);
out.flush();

it woks very goog but I don't know if there be a better form to do it, if there is it please notify me.

Thanks,

Viviana