I don't understand what's wrong

Question about the task

Restaurant (part 13)

Java Multithreading, Level 9, Lesson 15

Resolved

I think the validator don't like my loop

for(EventType eventType: EventType.values()){
       storage.put(eventType ,new ArrayList<EventDataRow>());
 }

I can't figure out the proper way to write this for the validator.

Let's return to the StatisticsManager class's record method. It should record events in a repository.
Let's create the repository :)
The repository has a 1-to-1 relationship with the manager, i.e. there is one manager and one repository per application.
Only the StatisticsManager can access the repository. Therefore...
From the above, it follows that the repository must be a private inner class.
Let's call it StatisticsStorage.

1. Inside the StatisticsManager class, create a private inner StatisticsStorage class.

2. To allow the manager to access the repository, you need to create a StatisticsStorage statisticsStorage field in the StatisticsManager class.
Initialize it with an instance of the class.

3. StatisticsStorage will store data internally in a Map storage field.
The StatisticsStorage and Map must have a has-a relationship
The maps type arguments are <EventType, List<EventDataRow>>

4. In the StatisticsStorage constructor, initialize the repository with default data:
for example, use a loop to add a new ArrayList<EventDataRow>() for each EventType.

Requirements:

A private StatisticsStorage class must be created in the StatisticsManager class.
The statisticsStorage field must be created and initialized in the StatisticsManager class.
A Map<EventType, List<EventDataRow>> storage field must be created in the StatisticsStorage class.
The storage field must be filled with some values.

package com.codegym.task.task27.task2712; import com.codegym.task.task27.task2712.kitchen.Cook; import com.codegym.task.task27.task2712.kitchen.Dish; import com.codegym.task.task27.task2712.kitchen.Waiter; import java.util.List; public class Restaurant { public static void main(String[] args) { /* List<Dish> result = ConsoleHelper.getAllDishesForOrder(); ConsoleHelper.writeMessage(result.toString()); */ Tablet tablet = new Tablet(5); Cook cook = new Cook("Amigo"); tablet.addObserver(cook); Waiter waiter = new Waiter(); cook.addObserver(waiter); tablet.createOrder(); tablet.createOrder(); /*tablet.createOrder(); tablet.createOrder();*/ } }

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Etienne Bélanger

Level 34 , Longueuil, Canada

4 May 2020, 15:54

solution

Thank to the rubber duck debugging technique, I found my mistake. The map wasn't not initialize.

+12