URLConnection to filename question

Question

Not sure if this is the right forum for this but I hope so.
I have a program which I created that takes a http address and then downloads the file from that address.
The program looks at the entered URL and downloads its content into a temp file with an arbitrarily name.
Then, a JFileChooser opens, which is supposed to, by default, suggest the name of the file which was just downloaded.
This works in MOST situations, but my problem is that if I have a url which redirects, for example, if i pasted the link to a download on a site like for example filehippo.com was what i tested with....
I gave it the URL: http://www.filehippo.com/download/file/4aac52cca0ce60fd95312eebf41deffc096823c22c2cbf043f4b6dfd323a4b3a/ which is just a trial version of "CC cleaner" or something, but instead of suggesting the name as like install cccleaner.exe or whatever it is supposed to be it is suggesting the name "null" because there is no filename included in that url.
My question is how can i get the filename which a URLConnection is pointing to / redirecting to 100% so that this will always be correct?
Thanks
Robert
Edited by: rnoack on Jan 27, 2009 11:32 PM

Answer 1

Check this out
try {
            // TODO code application logic here
            URL u=new URL("http://www.filehippo.com/download/file/4aac52cca0ce60fd95312eebf41deffc096823c22c2cbf043f4b6dfd323a4b3a/");
            HttpURLConnection con=(HttpURLConnection) u.openConnection();
            con.setDoOutput(true);
            con.setDoInput(true);
            OutputStream out = con.getOutputStream();
            InputStream in = con.getInputStream();
            if(con.getFollowRedirects())
                System.out.println(con.getURL());
        } catch (UnknownHostException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
Output: http://fs7.filehippo.com/9006/ac2f91079423421eb40b9a8ca428da4d/ccsetup216.exe