Need to use progress bar in my application

Question

hello friends,
Actually i m using jsp filedownload and I am gettting my file in byte array and need to implement a progress bar while downloading file (as IE showing in status bar downloading file size ..% of total file size)...no fake progress bars and no stop gap solutions as like a gif moving with sign "plz wait ..file is downloading "
plz help how to get this done
My code
HashMap result = (HashMap)request.getAttribute("requestParams");
     String type = request.getParameter("type");
     boolean isFile = false;
          if(result != null){
          String successFlag = (String) result.get("");
          String sFileName = null;
          byte[] bFile = null;
          String sContentType = null;
          if(successFlag != null && successFlag.equals("true")){
               for(int i=0;i<result.size();i++){
                    sFileName = (String) result.get("FILENAME");
                    bFile = (byte[]) result.get("FILEDATA");
                    sContentType = (String) result.get("CONTENTTYPE");
               response.reset();
               if(null!=bFile) {
                    if(bFile.length>0){
                         if(sContentType == null || sContentType.equals("")){
                              response.setContentType( "application/octet-stream" );
                         else response.setContentType(sContentType);
                         response.setHeader("Accept-Ranges", "bytes");
                         isFile = true;
                         response.setHeader("Content-Length", Integer.toString(bFile.length, 10));
                         if(null!=sFileName){
                              if("view".equals(type)){
                                   if(null!=sFileName)response.setHeader("Content-Disposition","inline; filename=\""+sFileName+"\"");
                              else{
                                   response.setHeader("Content-Disposition","attachment; filename=\""+sFileName+"\"");
                         ServletOutputStream outs = response.getOutputStream();
                         if(null!=bFile)outs.write(bFile);
                         outs.flush();
                         outs.close();
                         out.clear();
                         out = pageContext.pushBody();
                                   }

Answer 1

You should get your keyboard fixed. There's a lot of letters missing from what you type and it makes it very hard for other people to read. It looks extremely inelegant.
Anyway, your JSP isn't in control of the download. (You shouldn't have all that Java code in a JSP either but that's a separate issue.) All it does is to send the data to the browser, which is in charge of the download. And in all the browsers I use, there's a box which tells you how far the download has proceeded. No real need for a progress bar, even if you could persuade the browser to make one. Which you can't.