import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.applet.*;
 public class Test4 extends Applet implements ActionListener{
  Panel p1,p2,p3,p4; Label lb1,lb2,lb3;Button bt1;
   URL url;
 String s1;
  public void init(){
     Color c1=new Color(233,233,233);
  s1="http://127.0.0.1/Example1.html";
    setBackground(c1);
	 p1=new Panel();p2=new Panel();p3=new Panel();p4=new Panel();
	 lb1=new Label("    產生錯誤的可能原因:");
	 lb2=new Label("          ·您輸入的用戶并不存在，請先注冊"); 
	 lb3=new Label("          ·或者管理員已經將用戶帳號鎖定，請和管理員聯系");
	 
	 bt1=new Button("返 回");
	 lb1.setBackground(Color.lightGray);lb2.setBackground(Color.lightGray);lb3.setBackground(Color.lightGray);
	  p4.setBackground(Color.lightGray);bt1.setBackground(Color.lightGray);
	 setLayout(null);
	 lb1.setBounds(200,200,377,30);
	 lb2.setBounds(200,230,377,30);
	 lb3.setBounds(200,260,377,30);
	 add(p4);p4.setBounds(200,290,377,30);
	 add(lb1);
	add(lb2);
	add(lb3);
	 p4.add(new Label());p4.add(bt1);p4.add(new Label());
	 bt1.addActionListener(this);  
  }
  public void actionPerformed(ActionEvent e)
  {if(e.getSource()==bt1)
   {try
    {url=new URL(s1);
    }
    catch(MalformedURLException g)
         {
         }
       getAppletContext().showDocument(url);
	   }

   } 
           	public void paint(Graphics g) {
				
		g.drawRect(199,199,378,121);g.drawRect(197,197,382,125);
	
	}
 }
 //<applet code=Test4.class width=777 height=600></applet>