🔷 MVC – Model View Controller

// Model
public 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; }
}

// Controller (Activity)
public class MainActivity extends AppCompatActivity {
    private TextView txtName;
    private User user;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        txtName = findViewById(R.id.txtName);
        user = new User("דנה", 25);
        txtName.setText(user.getName());
    }
}

public class UserModel {
    public User getUser() {
        return new User("דנה", 25);
    }
}

public interface UserView {
    void showUserName(String name);
}

public class UserPresenter {
    private UserView view;
    private UserModel model;

    public UserPresenter(UserView view) {
        this.view = view;
        this.model = new UserModel();
    }

    public void loadUser() {
        User user = model.getUser();
        view.showUserName(user.getName());
    }
}

public class MainActivity extends AppCompatActivity implements UserView {
    private TextView txtName;
    private UserPresenter presenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        txtName = findViewById(R.id.txtName);
        presenter = new UserPresenter(this);
        presenter.loadUser();
    }

    @Override
    public void showUserName(String name) {
        txtName.setText(name);
    }
}