15. Processing Data with Streams

Activity 1: Applying Discount on the Items

Solution

Activity1.java

30         double sum = calculatePrice(fruitCart, vegetableCart, meatAndFishCart);
31         System.out.println(String.format("Sum: %.2f", sum));
32
33         Map<String, Double> discounts = Map.of("Cod", 0.2, "Salad", 0.5);
34
35         double sumDiscount = calculatePriceWithDiscounts(discounts, fruitCart, vegetableCart,            meatAndFishCart);
36         System.out.println(String.format("Discount sum: %.2f", sumDiscount));
37     }
38
39     private static double calculatePrice(ShoppingCart... carts...