how to download sqlite database file from the server in android

protected void doDownload(final String urlLink, final String fileName) { Thread dx = new Thread() {

                                 public void run() {

                                 File root = android.os.Environment.getExternalStorageDirectory();              
                                 File dir = new File (root.getAbsolutePath() + "/Content2/");
                                 if(dir.exists()==false) {

                                         dir.mkdirs();
                                    }
                              //Save the path as a string value

                               try 
                               {
                                       URL url = new URL(urlLink);
                                       Log.i("FILE_NAME", "File name is "+imageFile);
                                       Log.i("FILE_URLLINK", "File URL is "+url);
                                       URLConnection connection = url.openConnection();
                                       connection.connect();
                                       // this will be useful so that you can show a typical 0-100% progress bar
                                       int fileLength = connection.getContentLength();

                                       // download the file
                                       InputStream input = new BufferedInputStream(url.openStream());
                                       OutputStream output = new FileOutputStream(dir+"/"+imageFile);

                                       byte data[] = new byte[1024];
                                       long total = 0;
                                       int count;
                                       while ((count = input.read(data)) != -1) {
                                           total += count;

                                           output.write(data, 0, count);
                                       }

                                       output.flush();
                                       output.close();
                                       input.close();
                                   } 
                               catch (Exception e) 
                               {
                                    e.printStackTrace();
                                    Log.i("ERROR ON DOWNLOADING FILES", "ERROR IS" +e);
                                   }
                           }
                       };

                       dx.start();      
                   }

through this i can not download the file from server so please give some proper solution so that i can implement into the project. thanks in advance