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

class crcl{
   private int xc=0, yc=0, rd=0;
   
   public void set_val(int xa, int ya, int radius){
    xc=xa; yc=ya; rd=radius;
    // (xc,yc) is the center of the circle
    // rd is the radius
   }// method set_vaL

   public void draw(Graphics page) {
   page.drawOval(xc-rd,yc-rd,2*rd,2*rd);
   }// method draw

   public void fill(Graphics page) {
   page.fillOval(xc-rd,yc-rd,2*rd,2*rd);
   }// method fill


}// class crcl 

public class hw2 extends Applet{

  private crcl crcl1,crcl2,crcl3;
  private Graphics page;

  public void init(){
   crcl1 = new crcl();
   crcl2 = new crcl();
   crcl3 = new crcl();
   setSize(600,600);
   setVisible(true);
   page = getGraphics();
  }// method init

  public void paint(Graphics page){
   draw(page);
  }// method paint

  public void draw (Graphics page){
    page.setColor(Color.blue);
    page.fillRect(0,0,600,600);
    page.setColor(Color.red);
    crcl1.set_val(200,200,50);
    crcl1.draw(page);
    crcl2.set_val(400,400,75);
    crcl2.draw(page);
    page.setColor(Color.green);
    crcl3.set_val(200,400,100);
    crcl3.fill(page);
  }//method draw

}// class hw2