public static void main(String[] args) {

    CarDealer dealer1 = new CarDealer("Grandeur", 3500, 10);
    CarDealer dealer2 = new CarDealer("Genesis", 5500, 5);

    CarBuyer buyer = new CarBuyer();

    buyer.buyCar(dealer1, 3500);
    buyer.buyCar(dealer2, 5500);

    dealer1.saleResult();
    dealer2.saleResult();

    buyer.buyResult();
  }
  public void buyCar(CarDealer dealer, int price) {

    owner = dealer.carSale(price);
    money -= price;
  }