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

public class Stars extends Applet
{
private static final long serialVersionUID = 1L;

public void paint(Graphics g)
	{
	g.fillRect(0, 0, getSize().width, getSize().height); //make background black
	for (long i = 1; i < 10000; i++)	//generate 100000 stars
		{
		for (double j = 1; j < 1000000; j++);	//slow down the computer
		int x = (int)Math.round(getSize().width * Math.random());
		int y = (int)Math.round(getSize().height * Math.random());
		int width = (int)Math.round(3 * Math.random());
		switch (1 + (int)Math.round(2 * Math.random()))   //either draw or erase stars
			{
			case 1:	g.setColor(Color.white);
				g.fillRect(x, y, width, width);		//draw a star
				break;
			case 2:	g.setColor(Color.black);
				g.fillRect(x, y, 20*width, 20*width);	//erase stars
				break;
			} //end of switch
	
		} //end of for i
	} //end of paint

} //end of class Stars