Java program for simple Banner display using Applet

/* Simple banner using applet */

import java.awt.*;
import java.applet.*;
/* 
 <applet code=Banner width=1200 height=600></applet> 
*/

public class Banner extends Applet implements Runnable
{
 String msg = "... This is a simple banner ...";
 Thread t = null;
 int state;
 boolean stopFlag;
 Font f;

 public void init()
 {
  setBackground(Color.green);
  setForeground(Color.black);
  f=new Font("Arial",Font.BOLD,70); 
        setFont(f);
 }

 public void start()
 {
  t = new Thread(this);
  stopFlag = false;
  t.start();
 }

 public void run()
 {
  char ch;
  while(true)
  {
   try
   {
    repaint();
    Thread.sleep(250); 
    ch = msg.charAt(0);
    msg = msg.substring(1,msg.length());
    msg += ch;
    if(stopFlag)
     break;
   }
   catch(InterruptedException e) {}
  }
 }

 public void stop()
 {
  stopFlag = true;
  t = null;
 }

 public void paint(Graphics g)
 {
  g.drawString(msg,50,300);
 }
}

Output