File Downloading from server

[ssmtech]

Hello All             I have code for downloading a text file a server to the local system in a JSP page and not as a seperate Servlet,but it is giving me a  "IllegalStateException" ....the snippet of the code is                String fname1 = ""+user.getBusinessId();              String fname2 = ""+user.getAccountId();              String fname = fname1+"-"+fname2+".txt";              response.setContentType("text/plain");              response.setHeader("Content-Disposition","multi-part attachment;filename=\""+fname+"\";");              ServletOutputStream stream = null;              try {                  BufferedInputStream bif = new BufferedInputStream(new FileInputStream("c:/ssmtech/download/customers/"+fname));              int data;             stream = response.getOutputStream();///  It is giving me a IllegalStateException  out here.....             while(( data = "bif.read())" != -1) {             stream.write(data);              }                 bif.close();                     stream.close();               } catch(Exception e) {               }                      finally {                         if (stream != null)                         stream.close();           }                        I am working on a J2EE Application Server.....and on EJB......             Please anybody can help me out with.this .........it is Urgent     Sam