如何在程序运行时将JPanel替换为另一个JPanel

import javax.swing.*;

public class PanelReplacementExample {
    private JFrame frame;
    private JPanel originalPanel;
    private JPanel targetPanel;

    public PanelReplacementExample() {
        frame = new JFrame("Panel Replacement Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        originalPanel = new JPanel();
        originalPanel.add(new JLabel("Original Panel"));
        
        targetPanel = new JPanel();
        targetPanel.add(new JLabel("Target Panel"));
        
        frame.getContentPane().add(originalPanel);
        frame.pack();
        frame.setVisible(true);
        
        // 在某个事件触发时进行面板替换
        replacePanel();
    }
    
    private void replacePanel() {
        frame.getContentPane().remove(originalPanel);
        frame.getContentPane().add(targetPanel);
        frame.revalidate();
        frame.repaint();
    }
    
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new PanelReplacementExample();
            }
        });
    }
}