What is the MVC pattern?

The MVC (Model-View-Controller) pattern is an architectural template that divides an application into three components:

• Model — responsible for business logic and data. It stores the application's state and manages it.
• View — responsible for displaying data to the user. It receives information from the model and visualizes it.
• Controller — handles user input, interacts with the model, and updates the view.

This separation improves code maintainability and scalability, facilitates testing, and promotes component reuse.

Example in Java (simplified):

// Model
class User {
    private String name;
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
}

// View
class UserView {
    public void printUserDetails(String userName) {
        System.out.println("User: " + userName);
    }
}

// Controller
class UserController {
    private User model;
    private UserView view;

    public UserController(User model, UserView view) {
        this.model = model;
        this.view = view;
    }

    public void setUserName(String name) {
        model.setName(name);
    }

    public void updateView() {
        view.printUserDetails(model.getName());
    }
}

This way, the controller manages the model and updates the view.