Java GUI在单击按钮时在面板之间切换

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

public class CardLayoutExample {
    private JPanel cardPanel;
    private CardLayout cardLayout;

    public CardLayoutExample() {
        JFrame frame = new JFrame("CardLayout Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        cardPanel = new JPanel();
        cardLayout = new CardLayout();
        cardPanel.setLayout(cardLayout);

        // 创建多个面板
        JPanel panel1 = new JPanel();
        panel1.setBackground(Color.RED);
        JPanel panel2 = new JPanel();
        panel2.setBackground(Color.GREEN);
        JPanel panel3 = new JPanel();
        panel3.setBackground(Color.BLUE);

        // 将面板添加到面板容器中，并设置名称
        cardPanel.add(panel1, "Panel 1");
        cardPanel.add(panel2, "Panel 2");
        cardPanel.add(panel3, "Panel 3");

        JButton button = new JButton("Switch Panel");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                // 切换到下一个面板
                cardLayout.next(cardPanel);
            }
        });

        frame.add(cardPanel, BorderLayout.CENTER);
        frame.add(button, BorderLayout.SOUTH);
        frame.pack();
        frame.setVisible(true);
    }

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