在JButton listener中更换两个JPanels时程序挂起

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class MyFrame extends JFrame {
    private JPanel panel1;
    private JPanel panel2;

    public MyFrame() {
        panel1 = new JPanel();
        panel2 = new JPanel();

        JButton button = new JButton("Switch Panels");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 创建一个SwingWorker对象
                SwingWorker<Void, Void> worker = new SwingWorker<Void, Void>() {
                    @Override
                    protected Void doInBackground() throws Exception {
                        // 执行耗时操作，例如更换JPanels
                        switchPanels();
                        return null;
                    }

                    @Override
                    protected void done() {
                        // 可以进行一些清理操作或者处理耗时操作的结果
                    }
                };

                // 执行SwingWorker
                worker.execute();
            }
        });

        setLayout(new BorderLayout());
        add(button, BorderLayout.NORTH);
        add(panel1, BorderLayout.CENTER);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    }

    private void switchPanels() {
        // 执行更换JPanels的操作
        // 例如：
        remove(panel1);
        add(panel2, BorderLayout.CENTER);
        revalidate();
        repaint();
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new MyFrame();
            }
        });
    }
}