DEV Community: Vasu Devan

MVC - Parts

Vasu Devan — Tue, 18 Nov 2025 07:13:48 +0000

Controller - First part

The Controller is the most important component because it handles all incoming requests.

DispatcherServlet(Front controller) --> HandlerMapping(URLs& ref control)--> Actual controller.

When the user sends a request, it first reaches the Controller.
The Controller layer typically includes:
1.Front Controller (e.g., DispatcherServlet in Spring)
2.URL Mapping (decides which controller method should handle the request)
3.Actual Controller Logic (processes the request and returns a response)

Model - Second part

This level is considered the lowest level when compared with the View and Controller. It primarily represents the data to the user and defines the storage of all the application’s data objects.

User --> Dispatche servlet(front controller)--> Controller-->Module-->Services, repositories, Database- data

View - Third part

The View component is used for all the UI logic of the application. It generates a user interface for the user. Views are created by the data which is collected by the model component but these data aren’t taken directly but through the controller. It only interacts with the controller.

Responsibilities:
Rendering data to the user in a specific format.
Displaying the user interface elements.
Updating the display when the Model changes.
Example: In a bookstore application, the View would display the list of books, book details, and provide input fields for searching or filtering books.

Dispatcher servlet --> Controller --> Model --> View --> Front end design(UI)

MVC - Third part

Vasu Devan — Tue, 18 Nov 2025 07:10:58 +0000

Dispatcher servlet --> Controller --> Model --> View --> Front end design(UI)

MVC - Second part

Vasu Devan — Tue, 18 Nov 2025 06:18:57 +0000

Model :

This level is considered the lowest level when compared with the View and Controller. It primarily represents the data to the user and defines the storage of all the application’s data objects.

User --> Dispatche servlet(front controller)--> Controller-->Module-->Services, repositories, Database- data

MVC - First part

Vasu Devan — Tue, 18 Nov 2025 06:09:04 +0000

The Controller is the most important component because it handles all incoming requests.

DispatcherServlet(Front controller) --> HandlerMapping(URLs& ref control)--> Actual controller.

Sprint boot - pre learn

Vasu Devan — Tue, 18 Nov 2025 05:36:36 +0000

Before starting with Spring Boot,
we need to complete the following prerequisites:

1.Understand the fundamentals of Object-Oriented Programming (OOP).
2.Build a strong foundation in Core Java, as Java is platform-independent.
3.next step, start from MVC(Models,Viwes,Controller).

MVC, short for Model, View, and Controller, is a methodology or architectural pattern used for efficiently relating the user interface to underlying data models and organizing to relate the application code. MVC is primarily used to separate an application into three main components: Model, View, and Controller.