Updating the ingredients for coffee vending machine

[naman-ajmera]

private void updateIngredients(Coffee coffee) { for (Map.Entry<Ingredient, Integer> entry : coffee.getRecipe().entrySet()) { Ingredient ingredient = entry.getKey(); int requiredQuantity = entry.getValue(); ingredient.updateQuantity(-requiredQuantity); if (ingredient.getQuantity() < 3) { System.out.println("Low inventory alert: " + ingredient.getName()); } } }

The UpdateIngredients method is updating the ingredients used by that coffee, shouldn't it update the ingredients map and its quantity after dispensing coffee.

[lokeshsk1]

No, the code is correct, Let me explain

private void updateIngredients(Coffee coffee) {
        for(Map.Entry<Ingredient, Integer> ingredientMap : coffee.getRecipe().entrySet()){
            Ingredient ingredient = ingredientMap.getKey();
            int quantity = ingredientMap.getValue(); //this is the quantity of the ingredient in the coffee's recipe
            ingredient.updateQuantity(-quantity); //here, we update the overall quantity of the ingredient in the vending machine
        }
    }

For example,
let's assume espresso, Recipe contains Ingredient and quantity
here, the Ingredient has a quantity, which is the overall quantity
and the quantity is the quantity in of the ingredient in espresso

[dhanushkumar-amk]

private void updateIngredients(Coffee coffee) {
coffee.getRecipe().forEach((ingredient, requiredQuantity) -> {
ingredient.updateQuantity(-requiredQuantity);

    if (ingredient.getQuantity() < 3) {
        System.out.println("Low inventory alert: " + ingredient.getName());
    }
});

}
pls check this