How to check the status of file downloading?

Question

I have to download the selected file by using "file download" dialogue box.
This "File Download" dialogue box provides options for "Open", "Save", "Cancel" or "More Info". It is similar to usual "File Downloading".
And i am required to do further processing only if , file is "Open" or "Save".
So how can i check the status of the option selected by the user?
Following is the code snippet:
res.setContentType("text/plain");
res.addHeader("Content-Disposition", "attachment; filename=" +value);
try
     uFile= new File(fPath);
     fSize=(int)uFile.length();
     fis = new FileInputStream(uFile);
     c=-1;
     while ((c = fis.read()) != -1)
          out.print((char)c);             
     fis.close();
     out.flush();
     out=null;
catch(Exception e)
       out.println("Exception : " +e);
} I tried to generate a flag and inside a while loop, and then checking the status of that flag outside of loop.
But it doesn't work.
It reflects the value of flag even if user selects "Cancel" Option.
So, if there is any another way of checking the option selected by user from "Open","Save" or" Cancel", then please reply me.
Thanks in advance.

Answer 1

Is there any solution for this or any web link for this...?
Thanks in advance,
Waiting for reply