How is MVC architecture used in Java applications

The MVC (Model-View-Controller) architecture is a design pattern commonly used in Java applications to separate the application's concerns and improve code organization. In this architecture:

Model: Represents the data and business logic of the application. It directly manages the data, logic, and rules of the application.
View: Displays the data (model) to the user and sends user commands to the controller. It represents the UI layer of the application.
Controller: Accepts user input and interacts with the model to perform actions. It receives the input, processes it (with help from the model), and returns the output display (view).

Here's a simple example of how MVC can be implemented in a Java application:


        // Model
        class User {
            private String name;
            private int age;
            
            public User(String name, int age) {
                this.name = name;
                this.age = age;
            }

            public String getName() {
                return name;
            }

            public int getAge() {
                return age;
            }
        }

        // View
        class UserView {
            public void displayUserInfo(String userName, int userAge) {
                System.out.println("User: " + userName + ", Age: " + userAge);
            }
        }

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

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

            public void updateView() {
                view.displayUserInfo(model.getName(), model.getAge());
            }
        }

        // Example usage
        public class MVCPatternDemo {
            public static void main(String[] args) {
                User model = new User("Alice", 30);
                UserView view = new UserView();
                UserController controller = new UserController(model, view);
                
                controller.updateView(); // Displays: User: Alice, Age: 30
            }
        }

How is MVC architecture used in Java applications

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How is MVC architecture used in Java applications

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