例7-18.java

JAVA用Java和XML建立试题库管理系统,试题库管理系统的设计

//example 7-18
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class tt extends Applet implements ActionListener
{
   private Button pushButton1,pushButton2;
   int button=0;
   public void init()
   {
   	  pushButton1=new Button("Button 1");
   	  pushButton1.addActionListener(this);
   	  add(pushButton1);
   	  pushButton2=new Button("Button 2");
   	  pushButton2.addActionListener(this);
   	  add(pushButton2);
   }
   
   public void paint(Graphics g)
   {
   	 if(button==1)g.drawOval(10,10,30,50);
   	 else g.drawRect(10,10,30,50);
   }
   public void actionPerformed(ActionEvent e)
   {
   	 if(e.getActionCommand().equals("Button 1"))
   	     button=1;
   	 else if(e.getActionCommand().equals("Button 2"))
   	     button=2;
   	 showStatus("You Pressed:"+e.paramString());
   	 repaint();
   }
}