public class Cart
{
    private String shopper;
    
    private GroceryItem item1;
    private int item1Count;
    
    private GroceryItem item2;
    private int item2Count;
    
    public Cart(String shopper)
    {
        this.shopper = shopper;
        
    }
    
    public void addItem1(GroceryItem item, int count)
    {
        item1 = item;
        item1Count = count;
        item1.decrementStock(item1Count);
    }
    
    public void addItem2(GroceryItem item, int count)
    {
        this.item2 = item;
        this.item2Count = count;
        this.item2.decrementStock(item2Count);
    }
    
    public void printReceipt()
    {
        double item1TotalCost = item1Count * item1.getCost();
        double item2TotalCost = item2Count * item2.getCost();
        double subTotal = item1TotalCost + item2TotalCost;
        double taxRate = 0.07;
        double taxTotal = subTotal * taxRate;
        double total = subTotal + taxTotal;
        
        System.out.println("Shopper name: " + shopper);
        System.out.println("----------------------");
        System.out.println(item1.getName() + ": " + item1Count + " units at $" + item1.getCost() + " per unit = $" + item1TotalCost);
        System.out.println(item2.getName() + ": " + item2Count + " units at $" + item2.getCost() + " per unit = $" + item2TotalCost);
        System.out.println("   ----> Subtotal = $" + subTotal);
        System.out.println("   ----> 7% tax = $" + taxTotal);
        System.out.println("   ----> Total = $" + total);
        System.out.println("\n");
    }
}