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

// Circles displays circles on the applet.
public class Circles extends Applet
{
     private Circle redCircle, blueCircle;

     public void init ()
     {
          redCircle = new Circle (Color.red, 100, 100);
          blueCircle = new Circle (Color.blue, 200, 100);
     } // method init

     public void paint (Graphics g)
     {
          redCircle.drawCircle (g);
          blueCircle.drawCircle (g);
     } // method paint
} // class Circles

// The Circle class defines a circle and provides
// a method to draw it.
class Circle
{
     private Color color;
     private int x, y, diameter;

     Circle (Color c, int xPosition, int yPosition)
     {
          color = c;
          x = xPosition;
          y = yPosition;
          diameter = 50;
     } // constructor

     public void drawCircle (Graphics g)
     {
          g.setColor (color);
          g.fillOval (x, y, diameter, diameter);
     } // method drawCircle
}  // class Circle