动态删除Java Swing容器(我的代码在按下按钮时挂起)

import javax.swing.*;

public class DynamicContainerRemovalExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Dynamic Container Removal Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);

        JPanel panel = new JPanel();
        JButton removeButton = new JButton("Remove Panel");
        removeButton.addActionListener(e -> {
            frame.remove(panel);
            frame.revalidate();
            frame.repaint();
        });

        panel.add(new JLabel("This is a panel."));
        panel.add(removeButton);
        frame.add(panel);

        frame.setVisible(true);
    }
}