Question

Please write a main method that creates 2 pizzas and uses the toString() method to test this program. 
public class PizzaOrder {

    private Pizza[] order;
    private int numPizzas;

    public PizzaOrder() {
        order = new Pizza[1];
        order[0] = new Pizza("Cheese", 0);
        numPizzas = 1;
    }

    public PizzaOrder(int count) {
        order = new Pizza[count];
        this.numPizzas = 0;
    }

    public void addPizza(Pizza pizza) {

        for (int i = 0; i < order.length; i++) {
            if (order[i] == null) {
                order[i] = pizza;
                System.out.println("Pizza added successfully");
                numPizzas += 1;
                return;
            }
        }
        System.out.println("Pizza could not be added, unsuccess");
    }

    public double calcTotal() {
        double totalPrice = 0.0;
        int index = 0;
        while (order[index] != null && index < order.length) {
            totalPrice += order[index++].calcCost();
        }
        return totalPrice;
    }

    @Override
    public String toString() {
        return "Total Pizza Ordered : " + numPizzas + ", Total order price: $" + calcTotal();
    }
}

Answer 1

public class PizzaOrder {

    private Pizza[] order;
    private int numPizzas;

    public PizzaOrder() {
        order = new Pizza[1];
        order[0] = new Pizza("Cheese", 0);
        numPizzas = 1;
    }

    public PizzaOrder(int count) {
        order = new Pizza[count];
        this.numPizzas = 0;
    }

    public void addPizza(Pizza pizza) {

        for (int i = 0; i < order.length; i++) {
            if (order[i] == null) {
                order[i] = pizza;
                System.out.println("Pizza added successfully");
                numPizzas += 1;
                return;
            }
        }
        System.out.println("Pizza could not be added, unsuccess");
    }

    public double calcTotal() {
        double totalPrice = 0.0;
        int index = 0;
        while (order[index] != null && index < order.length) {
            totalPrice += order[index++].calcCost();
        }
        return totalPrice;
    }

    @Override
    public String toString() {
        return "Total Pizza Ordered : " + numPizzas + ", Total order price: $" + calcTotal();
    }
}

public class Main {
   public static void main(String args[]) {
       Pizza pizza1 = new Pizza("Cheese", 10);
       Pizza pizza2 = new Pizza("ABC", 20);
      
       PizzaOrder order = new PizzaOrder(2);
       order.addPizza(pizza1);
       order.addPizza(pizza2);
      
       System.out.println(order);
   }
}