public class CardApplet extends Applet{??CardLayout cardLayout;?Panel panel1,panel2;?Button button1,button2,button3,button4,button5,button6;?public void init(){??panel1 = new Panel();??panel2 = new Panel();??add(panel1);??add(panel2);??cardLayout = new CardLayout(0,0);??panel1.setLayout(cardLayout);??button1 = new Button("button1");??button2 = new Button("button2");??button3 = new Button("button3");??button4 = new Button("button4");??button5 = new Button("button5");??button6 = new Button("button6");????panel1.add("button1", button1);??panel1.add("button2", button2);??panel1.add("button3", button3);????panel2.add("button4", button4);??panel2.add("button5", button5);??panel2.add("button6", button6);?}?public boolean action(Event evt,Object arg){??cardLayout.next (panel1);??return true;???}?public static void main(String[] args) {??// TODO Auto-generated method stub?}}期望的是第一個(gè)頁面出現(xiàn)button1、2、3。單擊任意一個(gè)按鈕出現(xiàn)button4、5、6?？墒呛统霈F(xiàn)的是1、4、5、6。單擊的時(shí)候1、2、3會(huì)依次切換，但是4、5、6一直都在。