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

public class Dots extends Applet {

    private final int APPLET_WIDTH = 200;
    private final int APPLET_HEIGHT = 100;
    private final int RADIUS = 6;

    private Point point0 = null;

    public void init() {
	DotsMouseListener listener = new DotsMouseListener( this );
	addMouseListener( listener );
	setBackground( Color.black );
	setSize( APPLET_WIDTH,APPLET_HEIGHT );
    } // end of init()

    public void paint( Graphics g ) {
	g.setColor( Color.green );
	if ( point0 != null ) {
	    g.fillOval( point0.x-RADIUS,point0.y-RADIUS,RADIUS*2,RADIUS*2 );
	}
    } // end of paint()

    public void setPoint( Point point ) {
	point0 = point;
    } // end of setPoint()

} // end of Dots class