import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;



public class ForWhile extends Frame {
    //Line2D line = new Line2D.Double(40,0,40,300);

  int nPoints = 200;
    /*int xPoints[] = new int [100];
    int yPoints [] = new int [200];
    for(int d = 0 ; d<100 ; d++) {
        xPoints[d] = d;
        yPoints[d] = d;
    }
    Polygon p = new Polygon(xPoints, yPoints, nPoints);

*/
public void paint(Graphics g) {
      Graphics2D graph = (Graphics2D)g;
      graph.setStroke(new BasicStroke(1.0f));
    graph.setPaint(Color.black);

    float j = 0;
    float k = 0;
for(int i = 0 ; i < 10 ; i++) {
    j=j+10;
    k=k+5;
    Shape circle = new Ellipse2D.Float(250+k, 250+k, (110-j), (110-j));
    graph.draw((Shape) circle);

    }
}
    /*  int k = 0;
      for(int i = 10; i<500 ; i+=10) {
         // int k = 0;
          if(i % 3 == 0) {
            k=k+20;
              graph.setPaint(new Color(k,k,k));
          }
          Line2D line1 = new Line2D.Double(i,0,i,500);
         // Line2D line2 = new Line2D.Double(0,i,500,i);
        //  graph.draw(p);
         graph.draw(line1);
         // graph.draw (line2);
      }
     */





























    public static void main(String[] args) {
          Frame frame = new ForWhile();

          frame.addWindowListener(
                  new WindowAdapter(){
                      public void windowClosing(WindowEvent we){
                      System.exit(0);
                     }
                    }
                  );
          frame.setSize(500, 500);
          frame.setVisible(true);
    }



}