import java.awt.*;
class ClockCanvas extends Canvas
{
    public void paint(Graphics g)
    {
	g.drawOval(0, 0, 100, 100);
	double hourAngle = 2 * Math.PI * (minutes - 3 * 60)/(12*60);
	double minuteAngle = 2 * Math.PI * (minutes - 15)/60;
	g.drawLine(50, 50,
                   50 + (int)(30 * Math.cos(hourAngle)),
                   50 + (int)(30 * Math.sin(hourAngle)));
	g.drawLine(50, 50,
                   50 + (int)(45 * Math.cos(minuteAngle)),
                   50 + (int)(45 * Math.sin(minuteAngle)));
    }

   public void reset()
   {
       minutes = 0;
       repaint();
   } // reset

   public void tick()
   {
       minutes ++;
       repaint();
   } // tick

   private int minutes = 0;
} // ClockCanvas