Sample MVC Java

Controller.java

package mvc.controllers;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import mvc.models.*;
import mvc.views.*;

public class Controller {

    private Model model;
    private View view;
    private ActionListener actionListener;
    
    public Controller(Model model, View view){
        this.model = model;
        this.view = view;
                          
    }
    
    public void contol(){        
        actionListener = new ActionListener() {
              public void actionPerformed(ActionEvent actionEvent) {                  
                  linkBtnAndLabel();
              }
        };                
        view.getButton().addActionListener(actionListener);   
    }
    
    private void linkBtnAndLabel(){
        model.incX();                
        view.setText(Integer.toString(model.getX()));
    }    
}

main.java

package mvc;

import javax.swing.SwingUtilities;

import mvc.models.*;
import mvc.views.*;
import mvc.controllers.*;

public class Main
{
    public static void main(String[] args) {           
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {                                           
                Model model = new Model(0);
                View view = new View("-"); 
                Controller controller = new Controller(model,view);
                controller.contol();
            }
        });  
    }
}

Model.java

package mvc.models;

public class Model {
    
    private int x;
    
    public Model(){
        x = 0;
    }
    
    public Model(int x){
        this.x = x;
    }
    
    public void incX(){
        x++;
    }
    
    public int getX(){
        return x;
    }
}

View.java

package mvc.views;

import javax.swing.*;
import java.awt.BorderLayout;

public class View {
      
    private JFrame frame;
    private JLabel label;
    private JButton button;

    
    public View(String text){
        frame = new JFrame("View");                                    
        frame.getContentPane().setLayout(new BorderLayout());                                          
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);           
        frame.setSize(200,200);        
        frame.setVisible(true);
        
        label = new JLabel(text);
        frame.getContentPane().add(label, BorderLayout.CENTER);
        
        button = new JButton("Button");        
        frame.getContentPane().add(button, BorderLayout.SOUTH);        
    }
        
    public JButton getButton(){
        return button;
    }
    
    public void setText(String text){
        label.setText(text);
    }
    
    
}