import java.applet.Applet;
import java.awt.*;

// assume that the drawing area is 150 by 150
public class JustOneCircle extends Applet
{
  final int radius = 25;

  public void paint ( Graphics gr )
  { 
    setBackground( Color.lightGray );
    gr.drawOval( (150/2 - radius), (150/2 - radius), radius*2, radius*2 );
   }
}

import java.applet.Applet;
import java.awt.*;

// assume that the drawing area is 150 by 150
public class SquareAndRectangle extends Applet
{
  final int areaSide = 150 ;
  final int width = 100, height = 50;

  public void paint ( Graphics gr )
  { 
    setBackground( Color.green );
   
    // outline the drawing area
    gr.drawRect( 0, 0, areaSide-1, areaSide-1 ); 

    // draw interiour rectange.
    gr.drawRect( areaSide/2 - width/2 , 
        areaSide/2 - height/2, width, height ); 
   }
}

3.   Write an applet program and a HTML that displays a set of two circles.