public class TestProduct {


  public static void main(String a[]) {

     // let's test our product class

     Product p = new Product("Coca Cola can", 0.50, 1234, "soft drinks");
     Product p2 = new Product("Sprite can", 0.50, 1235, "soft drinks");

     // should give 0
     System.out.println(p.getName() + ": " + p.getNumber());

     p.buy(100);
     p2.buy(100);
     p.sell(1);
     p.sell(1);
     p.sell(4);
     p.sell(1);

     // should be 93
     System.out.println(p.getName() + ": " + p.getNumber());


     p.sell(200);

     // should be Coke:0 and Sprite:???
     System.out.println(p.getName() + ": " + p.getNumber());
     System.out.println(p2.getName() + ": " + p2.getNumber());
    

  }


}