ShoppingCart Class

import java.util.HashMap;
import java.util.Map;

public class ShoppingCart {

    private Map<String, Item> cart = new HashMap<>();

    public ShoppingCart() {
        this.cart = new HashMap<>();

    }

    public void add(String product, int price) {
        if(cart.containsKey(product)){
            this.cart.get(product).increaseQuantity();
        }else

        this.cart.put(product, new Item(product, 1, price));

    }

    public int price() {
        int sum = 0;
        for (String getItems : cart.keySet()) {
            sum = cart.get(getItems).price() + sum;
        }

        return sum;
    }

    public void print() {
        for (String getItemsPrint : cart.keySet()) {
            System.out.println(cart.get(getItemsPrint));
        }
    }

}