使用MVC模式写一个java的swing代码

好的，这是一个简单的使用MVC模式写的Java Swing代码示例：

Model.java：

public class Model {
    private String text;

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

View.java：

import javax.swing.*;

public class View {
    private JFrame frame;
    private JPanel panel;
    private JLabel label;
    private JButton button;
    private Model model;

    public View(Model model) {
        this.model = model;
        frame = new JFrame("MVC Demo");
        panel = new JPanel();
        label = new JLabel(model.getText());
        button = new JButton("Click me!");

        panel.add(label);
        panel.add(button);
        frame.add(panel);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    public void update() {
        label.setText(model.getText());
    }

    public JButton getButton() {
        return button;
    }
}

Controller.java：

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

public class Controller {
    private Model model;
    private View view;

    public Controller(Model model, View view) {
        this.model = model;
        this.view = view;

        view.getButton().addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                model.setText("Button clicked!");
                view.update();
            }
        });
    }
}

Main.java：

public class Main {
    public static void main(String[] args) {
        Model model = new Model();
        View view = new View(model);
        Controller controller = new Controller(model, view);
    }
}

这个简单的程序演示了MVC模式的基本实现，其中Model表示数据，View表示视图，Controller表示控制器，它们之间通过观察者模式进行通信。当用户点击View中的按钮时，Controller会更新Model的数据，并通知View进行更新。