import java.awt.*;public class Obstacle {		// This just draws an oval on the screen, to serve as an obstacle							// or light source... whatever.	int x,y,size;	public Obstacle(int xCoord, int yCoord, int s) {		x = xCoord;		y = yCoord;		size = s;	}	public void display(Graphics g) {		int xxx=x-size/2;		int yyy=y-size/2;		g.setColor(new Color(255,255,0));		g.fillOval(xxx,yyy,size,size);		g.setColor(new Color(235,235,0));		g.fillOval(xxx+5,yyy+5,size-10,size-10);		g.setColor(new Color(215,215,0));		g.fillOval(xxx+10,yyy+10,size-20,size-20);		g.setColor(new Color(200,200,0));		g.fillOval(xxx+15,yyy+15,size-30,size-30);	}}