cardlayoutexample.java

来自「Java课程中所有的可运行程序 全部都是java课程中所涉及到的源码」· Java 代码 · 共 95 行

import java.awt.event.*;
import java.awt.*;
 public class CardLayoutExample extends Frame {

 Button b1=new Button("第一个");
 Button b2=new Button("前一个");
 Button b3=new Button("后一个");
 Button b4=new Button("最后一个");

Panel p1,p2,p3,p4;
Panel pbutton=new Panel();
Panel pdisplay=new Panel();

CardLayout cardlayout=new CardLayout();

public CardLayoutExample(String ss)
{
    super(ss);
    setLayout(new BorderLayout());
    this.add(pbutton,BorderLayout.NORTH);
    this.add(pdisplay,BorderLayout.CENTER);
    pdisplay.setLayout(cardlayout);

    p1=new Panel();
    p1.add(new Label("第一张卡片"));
    pdisplay.add("first",p1);

   p2=new Panel();
    p2.add(new Label("第二张卡片"));
    pdisplay.add("second",p2);

   p3=new Panel();
    p3.add(new Label("第三张卡片"));
    pdisplay.add("third",p3);

   p4=new Panel();
    p4.add(new Label("第四张卡片"));
    pdisplay.add("fourth",p4);


b1.addActionListener(new ActionListener(){
     public void actionPerformed(ActionEvent e){
          processAction(e);}
            }  );
	pbutton.add(b1);
b2.addActionListener(new ActionListener(){
         public void actionPerformed(ActionEvent e){
            processAction(e);}
             }  );
	pbutton.add(b2);
	b3.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e){
             processAction(e);}
                 }  );
	pbutton.add(b3);
	b4.addActionListener(new ActionListener(){
           public void actionPerformed(ActionEvent e){
             processAction(e);}
                }  );
	pbutton.add(b4);

}



protected void  processAction(ActionEvent e){
Button b=(Button)e.getSource();
if(b.equals(b1))
cardlayout.first(pdisplay);

if(b.equals(b2))
cardlayout.previous(pdisplay);

if(b.equals(b3))
cardlayout.next(pdisplay);

if(b.equals(b4))
cardlayout.last(pdisplay);


	    }


 public static void main(String args[]) {
        CardLayoutExample nowFrame=new CardLayoutExample("CardLayout");
         nowFrame.addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    System.exit(0);
         }
  });
nowFrame.pack();
  nowFrame.show();
    }

 }