Hi ,


I am doing the image retrieval from the server. here i need a progress bar which will show the progress information of the image retrieval.

i feel that if i set the contentlength in the HttpServletResponse object , the i can get total object which is coming over the network.
i kept the code like this

res.setContentLength(image.getSize());

here image is my own object. which is having some size. so at the client side

URL url=new URL("http://localhost/servlet/ServerServlet");
URLConnection con=url.openConnection();
long length=con.getContentLength();
System.out.println("The content length is"+length);

so here i am getting the contentlength is -1, though i specified the content length as image size.

please tell me how to get the progressbar while retriving the image from the server. and the contentlength which i specified.



Regards
laxman

progress bar is the classic thread test.
you need to have a LOW_PRIORITY thread running in your server which is responsible on image retrieving, while the main thread which is the servlet is returning the results, the servlet should keep sending the current result until the low priority thread finishs retrieving.
firas