showcardlayout.java

SHOWCARDLAYOUT bbs.cn.yimg.com 。

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

public class ShowCardLayout extends JApplet 
     implements ActionListener,ItemListener {
     	private CardLayout cardLayout = new CardLayout (20, 10);
     	private JPanel cardPanel = new JPanel (cardLayout);
     	private JButton jbtFirst,jbtNext,jbtPrevious,jbtLast;
     	private JComboBox jcboImage;
     	private final int NUM_OF_FLAGS =9;
     	
     	public ShowCardLayout() {
     		cardPanel.setBorder(
     			new javax.swing.border.LineBorder(Color.green));
     		
     		
     		for (int i = 1;i<= NUM_OF_FLAGS; i++) {
     			JLabel label = 
     			new JLabel(new ImageIcon("image/flag" + i + ".gif"));
     			cardPanel.add(label ,String.valueOf(i));
     		}
     		
     		
     		JPanel p = new JPanel();
     		p.add(jbtFirst = new JButton ("fuck"));
     		p.add(jbtNext = new JButton("Next"));
     		p.add(jbtPrevious = new JButton("Previous"));
     		p.add(jbtLast = new JButton("Last"));
     		p.add(new JLabel("Image"));
     		p.add(jcboImage = new JComboBox());
     		
     		
    for ( int i = 1; i <= NUM_OF_FLAGS; i++)
       jcboImage.addItem(String.valueOf(i));
       
       
       getContentPane().add(cardPanel, BorderLayout.CENTER);
       getContentPane().add(p, BorderLayout.NORTH); 
       
       
       jbtFirst.addActionListener(this);
       jbtNext.addActionListener(this);
       jbtPrevious.addActionListener(this);
       jbtLast.addActionListener(this);
       jcboImage.addItemListener(this);
     }
     
     
     public void actionPerformed(ActionEvent e) {
     	String actionCommand = e.getActionCommand();
     	if (e.getSource() instanceof JButton)
     	  if ("First".equals(actionCommand))
     	   cardLayout.first(cardPanel);
     	  
     	  else if ("Last".equals(actionCommand))
     	   cardLayout.last(cardPanel);
     	   
     	  else if ("Previous".equals(actionCommand))
     	   cardLayout.last(cardPanel);
     	   
     	  else if ("Next".equals(actionCommand))
     	   cardLayout.next(cardPanel); 
     }
     
     
     
     public void itemStateChanged(ItemEvent e) {
     	if (e.getSource() == jcboImage)
     	
     	cardLayout.show(cardPanel, (String)e.getItem());
     }
   } 
    
    
   
    class Maind {
	public static void main(String args[]) {
		FrameClass frame = new FrameClass();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//用于关闭程序
		frame.setVisible(true);//让程序结果可视化
	}
}
class FrameClass extends JFrame {
    	public FrameClass() {
		Toolkit kit = Toolkit.getDefaultToolkit(); //获得一个能与系统进行交互的对象
		Dimension screenSize = kit.getScreenSize(); //获得显示器的大小
		int screenHeight = screenSize.height;
		int screenWidth = screenSize.width;
		setBounds(screenHeight / 4, screenWidth / 8, screenHeight,
				screenWidth / 2);

		setTitle("sdaf");
         ShowCardLayout card = new ShowCardLayout();
         add(card,BorderLayout.CENTER);
}
}