code: public synchronized void promote(Tile tile)
      {
          if (tileQueue.contains(tile))
          {
              try
              {
                  tileQueue.remove(tile);
                  tile.setPriority(Tile.Priority.High);
                  tileQueue.put(tile);
              }
              catch (Exception ex)
              {
                  ex.printStackTrace();
              }
          }
      }
docs: Increase the priority of this tile so it will be loaded sooner.
  @param tile the tile