Tagged Questions

-1
votes
2answers
92 views

Java generalization

I have a question regarding generalization. I know when it is needed to be done, but is it worth having an extra class for 1 field? e.g.: StatisticsCustomer has fields: Customer customer and int ...
1
vote
0answers
75 views

Creating a System Sequence Diagram from an [extended] use case

As I have been taught - one controller = one use case. But I have: OutsiderController SupplierController (which extends OutsiderController) SubContractorController (which also extentds ...
0
votes
1answer
64 views

Make a controller a superclass in MVC design pattern

I am really confused how to handle this. I have: model.Outsider model.SubContractor (which extends Outsider) Basically, Outsider would mean Supplier, but SubContractor is not a Supplier itself ...
2
votes
1answer
79 views

Do I need JUnit tests for the controller layer on a MVC when I have a database layer

I have a MVC which has this structure: ui controller db model Basically the controller doesn't really do much more than connection ui with db layer. Do I need to provide JUnit tests for the ...
0
votes
1answer
147 views

Where should I put my method

I am writing a Java program using the MVC design pattern. I have classes Item and Supplier. In the database they are connected through a item_supplier table. I'm writing a method which will give me ...
1
vote
2answers
118 views

MVC pattern with JSF-Spring-MyBatis webapp

I've a Java webapp with these frameworks and I want to know if my implementation meets with MVC pattern: Controller Layer (V) I'm using JSF @ManagedBean public class Controller{ ...
2
votes
1answer
53 views

Java MVC extra classes

I have a simple MVC project. My current packages: gui controller db domain I want to put extra classes which I will use, e.g. md5 hashing, email validator (methods which I will use in more than ...
-3
votes
0answers
80 views

Is it Wise to disconnect the ui layer from the backend in mobile web apps? [closed]

What's the future when it comes to mobile web development? I mean, traditionally, in the java world, we make use of Java EE technologies such as Spring, Hibernate and some MVC framework like Spring ...
2
votes
2answers
131 views

MVC framework that uses classes instead of methods for actions

In most MVC frameworks, Controller class contains multiple methods, each representing one action. Then annotations and reflection is used to call those methods appropriately. But from OOP point of ...
0
votes
1answer
62 views

Controller JSP - no view

Most people say do not use JSPs. But what if I have a JSP that does not show anything, it only acts as a controller? Why would I do that? Because we do not need to redeploy complete webapp to make a ...
0
votes
1answer
192 views

How to design an application that read files using MVC pattern?

I am going to write an application that reads data from a csv file, and display that data to the user. I intend to apply an MVC design pattern to create this application. A user will interact with ...
3
votes
1answer
249 views

Is MVC the optimal pattern to build a RESTful web service?

Not being a Java practitioner, I recently came to learn about the JAX-RS specification and Apache CXF framework. While still wrapping my head around all these things, I also read the this question on ...
0
votes
0answers
81 views

something feels off about my model encapsulation

I have a model doing all the buisness logic. I use package scope methods to allow me to modify state on objects that the controller can view, but not change directly. Unfortunately, I'm actually ...
2
votes
2answers
192 views

What should be in my model and what should be in my controler?

We are writing a system with a sort of quasi-MVC structure (it was never stated as that, but that's what it is). I'm building up a full knowledge of the system and the controller will have to make ...
0
votes
2answers
132 views

Communication between View and Model

I have a basic issue with the MVC architecture. I am aware that the View usually listens to the Model. But how are user requests propagated to the Model? Currently I do it like this, when the user ...
5
votes
2answers
172 views

method to allow me ability to freely modify my classes, but make them immutable to others?

I am creating the model part of an MVC architecture. My one class will provide all the accesses to allow one to fetch system state. I want most of this state to be immutable as it shouldn't be ...
0
votes
1answer
372 views

Problems for Sample Code [closed]

I was recently asked to write some sample code that solves a difficult technical problem. I've been mulling over what kinds of problems might be good to solve in code to demonstrate my skills in such ...
2
votes
2answers
262 views

How to use MVC in practice

I'm very confused. I can't even begin to understand how MVC would be implemented outside of web development. This might seem like too general a question, but how would one apply MVC. I have the ...
2
votes
2answers
303 views

How to synchronize client and server model objects?

We have a client-server application with a thick client (GWT). There are client-side MVP presenters (MVC controllers) which hold references to some objects viewed in the GUI. Some user actions cause ...
1
vote
1answer
447 views

Handling error message for a Spring MVC login form

This can apply to many error handling scenarios, but I'm curious about how to do it in a login scenario. Given this Spring controller method: @RequestMapping(value = "/account/login", method = ...
4
votes
2answers
180 views

MVC - Isolating view and model logic

I understand that the model should generally consist of data manipulation and the view for data display from the model, but how do I keep my model and view layers decoupled? My simple view has a few ...
2
votes
1answer
212 views

MVC - sharing multiple models

I am building a java desktop application where I am attempting to implement MVC. The GUI interface has multiple views (think pop-up windows) from the main view. Each view has its associated model that ...
6
votes
4answers
1k views

Using MVC in a Java app

I need to write a cross-platform GUI application to process (in multiple threads) and visualize fairly large quantities of data. Ideally the application should be relatively fast and look good. The ...
0
votes
2answers
95 views

How to handle notifications to several partial views of the same model?

I am working on refactoring an old simulation of a Turing machine. The application uses a class that contains the state and the logic of program execution, and several panels to display the tape ...
0
votes
3answers
2k views

In MVC , DAO should be called from Controller or Model

I have seen various arguments against the DAO being called from the Controller class directly and also the DAO from the Model class.Infact I personally feel that if we are following the MVC pattern , ...
2
votes
2answers
384 views

MVC: View-Controller Interaction

I have a Java application that I am implementing following the MVC pattern. I want to have a window (view) that contains a form which allows the user to add several text fields. There will also be a ...
1
vote
1answer
329 views

MVC, Java Design Pratices, and Flaws of java.util.Observable and java.util.Observer

I am planning learning Model-View-Controller (MVC) development using Java. While reading I came across a post which mentions java.util.Observer and java.util.Observable for MVC development. As I ...
2
votes
1answer
343 views

Package conventions for MVC app [closed]

Which (if either) of the below is the more conventional/acceptable way to structure packages in a J2EE app? I'm trying to follow an MVC pattern as much as possible. foo.bar.users ...
4
votes
1answer
841 views

Opensource showcase for MVC in Java Swing

I've allready created small desktop CRUD applications using Java/Swing. In hindsight I'm not quite sure if the overall design of these applications is good. I've also done some reading on MVC and ...
2
votes
1answer
550 views

Difference between Controller and Dispatcher in MVC for web frameworks?

In MVC applied to WSGI or Java EE, is the Servlet a controller, dispatcher, or both? I think I've seen system diagrams where the controller and the dispatcher are different. Could the controller ...
5
votes
2answers
2k views

How to completely decouple Model from View/Controller in Java Swing

Is there a collection of commonly-agreed-upon design guidelines for separating the Model classes from the View/Controller classes in a Java Swing app? I'm not so concerned that the View/Controller ...
13
votes
4answers
2k views

Explain Model View Controller

My experience with developing dynamic websites is limited mostly to Java servlets. I've used Tomcat to develop various Java servlets, and I wouldn't hesitate to say that I'm reasonably proficient ...
4
votes
1answer
270 views

MVC for our application?

There are some issues about how to manage our program designs and programming styles. I was assigned to find a solution to write reusable code - though, the programming team does not follow the rules. ...