/*
  * Favorites the specified tweet, returning true in case of success.
  * If error, returns false.
  */
 public boolean doFav(Status tweet) {
   try {
     twitter.createFavorite(tweet.getId());
     return true;
   } catch (Exception ex) {
     System.err.println("[ERROR] Can't favorite " + tweet.getId());
     ex.printStackTrace();
     return false;
   }
 }