cart.buy("Memory stick", 2, 500.00);
System.out.println("Buying a laptop");
cart.buy("Laptop", 1, 2000.00);
System.out.println("Print cart:");
Order order = cart.getOrder();
System.out.println("Total: $" + order.getTotal());
for (LineItem item : order.getLineItems())
{
System.out.println(item.getQuantity() + " " + item.getProduct() + " " + item.getSubtotal());
}
System.out.println("Checkout");