Use of Control Loops in Applets

import java.awt.*;
import java.applet.*;
public class Loop extends Applet
{
 public void paint(Graphics g)
 {
   for(int i=0; i<=4; i++)
 {
  if(i%2)==0)
   g.drawOval(120, i*60+10, 50, 50);
  else
   g.fillOval(120, 1*60+10, 50, 50);
  }
 }
}


<html>
   <head>
   </head>
   <body>
         <applet code = "Loop.class" width = "540" height = "360"></applet>
   </body>
</html>