How to make a method to add or not in a List

[Kaique Marques]

Hello, everyone, I am starting my studies in java, and I came across a problem that in the case would be: how to make a test not fail to add a pizza without the ingredients list CarrinhoDeCompras. And what class I would have by this method?

Note: I've been told that's pretty bad encapsulated, but not yet learned this concept well, then leave to apply after I well understand this issue.

[Winston Gutkowski]

Kaique Marques wrote:Note: I've been told that's pretty bad encapsulated, but not yet learned this concept well, then leave to apply after I well understand this issue.

My suggestion: Show us what you've written so far, and ask your question again. And don't worry if some your program is in Portugese; we're used to it.

Winston

[Kaique Marques]

public class Pizza {



    static Map<String, Integer> ingredientes= new HashMap<>();
    int contaIngrediente=0;
    static int contaPizza=0;



    public void adicionaIngrediente(String ingrediente, Integer quantidade){


        if(ingredientes.containsKey(ingrediente)){
            int aux= ingredientes.get(ingrediente);
            ingredientes.put(ingrediente, quantidade+aux);
        }

        else {
            ingredientes.put(ingrediente, quantidade);

        }

        contaIngrediente++;
    }
}

public class CarrinhoDeCompras {

 
    List<Pizza> pizzas= new ArrayList<Pizza>();


 
    public void retornarTotalPizzas(){
        System.out.println("\n");
        System.out.println("Total de pizzas no carrinho: "+pizzas.size());
        System.out.println("\n");
    }

public class Principal {
    public static void main(String[] args){
  

        CarrinhoDeCompras carrinhoDeCompras= new CarrinhoDeCompras();

        Pizza pizza1= new Pizza();
        pizza1.adicionaIngrediente("Pepperoni", 8);
        pizza1.adicionaIngrediente("Bacon", 7);
        pizza1.adicionaIngrediente("Presunto", 9);


        carrinhoDeCompras.pizzas.add(pizza1);

        Pizza pizza2= new Pizza();
**********witout put ingredients here*********
           carrinhoDeCompras.pizzas.add(pizza2); ****Can't add to the list carrinhoDeCompras.

[Knute Snortum]

When posting code, be sure to use code tags. I've done it for you this time.

[Knute Snortum]

My suggestion would be to do the following:

* Make pizzas in class CarrinhoDeCompras private.

* Create a method in class CarrinhoDeCompras called addPizza(Pizza pizza).

* In this method, test whether the pizza object has ingredients and if so, add it to the List.

[Kaique Marques]

Thank you Soo much, it works now

[Campbell Ritchie]

Welcome to the Ranch

Please mark all your fields private (as Knute has already told you) and don't mark any of them static. You will doubtless want ingredients for one pizza, rather than a total of ingredients for the whole shop.
Why have you got contaPizza at all? Why have you marked it static?