I don't get it

Question about the task

MVC (part 7)

Java Multithreading, Level 4, Lesson 14

Resolved

Conditions are not clear :)

1. Assign each of these methods to the correct MVC classes:

public void onOpenUserEditForm(long userId) {
...loadUserById(userId);
...refresh(...getDataModel());
}

public void fireOpenUserEditFormEvent(long id) {
...onOpenUserEditForm(id);
}

public void loadUserById(long userId) {
User user = userService.getUsersById(userId);
...setActiveUser(user);
}
!!!! The user sees the View with the list of users, clicks on one of them, and a request is sent to the server.
We fetch new data and display a different View that is specific to the one selected user.
Keep this in mind when implementing this task.

2. In the main method, add the ability to open an edit form for the user with id = 126 before the fireShowDeletedUsersEvent() method is called.

3. Add to the Model interface the method that you put in the Model, and implement it in FakeModel: throw an UnsupportedOperationException.

Requirements:

You must determine the correct location for the onOpenUserEditForm(long) method, and implement it.
You must determine the correct location for the fireOpenUserEditFormEvent(long) method, and implement it.
You must determine the correct location for the loadUserById(long) method, and implement it.
You must call the UsersView object's method for opening an edit form for the user with id 126, before calling the fireShowDeletedUsersEvent() method.
The Model interface must declare the method that you previously implemented in the MainModel class.
In the FakeModel class, you need to throw an UnsupportedOperationException in the body of the method that was added to the Model interface.

package com.codegym.task.task36.task3608; import com.codegym.task.task36.task3608.controller.Controller; import com.codegym.task.task36.task3608.model.MainModel; import com.codegym.task.task36.task3608.model.Model; import com.codegym.task.task36.task3608.view.EditUserView; import com.codegym.task.task36.task3608.view.UsersView; public class Solution { public static void main(String[] args) { Model model = new MainModel(); UsersView usersView = new UsersView(); Controller controller = new Controller(); usersView.setController(controller); controller.setModel(model); controller.setUsersView(usersView); usersView.fireShowAllUsersEvent(); controller.setEditUserView(new EditUserView()); usersView.fireOpenUserEditFormEvent(126); usersView.fireShowDeletedUsersEvent(); } }

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Johannes

Level 27 , Centurion, Pretoria, South-Africa

13 May 2020, 03:35

no sh*t. They have classes for every line of syntax, and I have no idea what they're talking about with the strange method names and events. Am I supposed to find these classes on google ? Not ANY idea why we're doing anything in this task, it wasn't explained, and I don't get any of this. I just keep putting code and validating until I see green marks. And copying from other people. This is a total waste of my money and time, I can get confused on many other sites. If the next lesson doesn't make more sense, I think I'm done with this course. I understand classes enough to know if you want me to instantiate a class, and manipulate data between my solution class and other classes, but this is just a lot of incomprehensible classes calling one another, and makes no sense. Any requirement telling me "Ok, now you have to display this and that" makes no sense. I don't know where and why and how we need so many classes to interact, and it could just as well have been spelled in Hebrew as far as comprehension goes. Sorry for the negativity, but I had such high hopes up to here, so good luck if you (reading this) can make any sense from this task, and good luck further.

BlueJavaBanana

Level 37

14 August 2020, 17:58

LMAO! For real this has been a quite unhelpful unit. I'm taking my time tryng to understand, but it's tricky. Back in earlier levels you;d get three pages explaining what a loop is with loads of practice. Now you get half a page on anonymous classes and then have to create eBay!

Seb

Level 41 , Crefeld, Germany

2 February 2020, 22:09

solution

The onOpenUserEditForm in your Controller class needs to be adjusted. It should look very much like onShowAllUsers or onShowAllDeletedUsers. Try running your code without lines 40 and 43.

- FniJnn -

Level 33 , Paris, France

3 February 2020, 12:02

thanks man :)

Seb

Level 41 , Crefeld, Germany

3 February 2020, 14:58

You're welcome. :-)