Draw Dots at Random Locations in an Applet

package org.best.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);
                  
            }
    }