import java.awt.CardLayout;

 import java.awt.Color;

 import java.awt.Container;

 import javax.swing.JButton;

 import javax.swing.JFrame;

 public class CardLayoutDemo {

     public static void main(String[] args) {

         //新建一个JFrame框架

         JFrame frame = new JFrame("CardLayout");

         frame.setSize(600, 400);

         frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

         final Container cp = frame.getContentPane();//得到一个内容面板；final标记的为常量，只能赋值一次

         final CardLayout cardlayout = new CardLayout();//因为后期会对layout进行操作，才将其单独定义出来

         cp.setLayout(cardlayout);//cp.setLayout(new CardLayout())的方式不可行，会出现异常

         Color[] colors = { Color.white, Color.GRAY, Color.PINK, Color.cyan };

         for (int i = 0; i < colors.length; i++) {

             String name = "card" + String.valueOf(i + 1);

             JButton button = new JButton(name);

             button.setBackground(colors[i]);

             cp.add(name, button);

         }

         frame.setVisible(true);

         /**

          * 要点是创建线程时，要重写Thread类中的run方法

          */

         Thread thread = new Thread() {

             public void run() {

                 while (true) {

                     try {

                         Thread.sleep(400);

                     } catch (InterruptedException e) {

                         e.printStackTrace();

                     }

                     /**

                      * cardLayout的next是另外一个内容面板

                      */

                     cardlayout.next(cp);

                 }

             }

         };

         thread.start();//启动线程

     }

 }