gistfile1.java

/* 
* The code on the server side has content disposition as attachment
* It adds a cookie for the filedownload status
* remember to flush the response
*/


response.setHeader("Content-Disposition", "attachment; filename="+downloadFileName);
Cookie cookie = new Cookie("fileDownloadStatus", "complete");
cookie.setPath("/");
response.addCookie(cookie);
response.flushBuffer();