Draw Dots at Random Locations in an Applet Example

/*
Draw Dots at Random Locations in an Applet Example
This Java example shows draw dots at random locations at specified interval
using Java Thread and Applet classes.
*/
import java.applet.Applet;
import java.awt.Dimension;
import java.awt.Graphics;
/*
<applet code = "DrawDotsAtRandomLocationsExample" width = 500 height = 300>
</applet>
*/
public class DrawDotsAtRandomLocationsExample extends Applet implements Runnable{
Thread t;
public void init(){
//start new Thread
t = new Thread(this);
t.start();
}
public void run(){
try{
while(true){
// Request repaint
repaint();
Thread.sleep(200);
}
}
catch(Exception e){
}
}
public void update(Graphics g){
paint(g);
}
public void paint(Graphics g){
Dimension d = getSize();
int x = (int)(Math.random() * d.width);
int y = (int)(Math.random() * d.height);
g.fillRect(x,y,2,2);
}
}