public void printUnsold()
    {

        ArrayList<Lot> unsoldLots = getUnsold(); // Initialise arraylist// Make temporary arraylist for unsolt lots of type Lot

        for(Lot tmp : unsoldLots) {
            System.out.println(tmp.toString());
        }        
    }
    
    /**
     * Show only unsold
     */
    public ArrayList<Lot> getUnsold()
    {
          ArrayList<Lot> unsoldLots = new ArrayList<Lot>(); // Initialise arraylist// Make temporary arraylist for unsolt lots of type Lot
         
        Iterator<Lot> it = lots.iterator(); // Iterate through lots abd refer to each temporary iteration as "it"
          while(it.hasNext()) {
              Lot tmpLot = it.next();
              if (tmpLot.getHighestBid() == null) {
                unsoldLots.add(tmpLot);
              }
             }
             return unsoldLots;
        }