The book Java Web Magic shows you how to find and modify a variety of fun and useful applets. Here's an example.

To play this you need a browser that supports java.

 

Roll the cursor over the stoplight. Then click on the image and hold the mouse down. Release it. Now move the cursor off the image.

Here is the script for the applet as it appears in the HTML document for this page:

<APPLET CODE="HiBut.class" WIDTH=28 HEIGHT=65 ALIGN=bottom>

<param name=normal value="javaImages/redlight.gif">

<param name=highlight value="javaImages/redlight.gif">

<param name=select value="javaImages/greenlight.gif">

<param name=active value="javaImages/greenlight.gif">

<param name=normalsound value="javaSounds/GlassBreak.au">

<param name=highlightsound value="javaSounds/CarHorn.au">

<param name=selectsound value="javaSounds/TruckHorn.au">

<param name=activesound value="javaSounds/Screech.au">

<param name=highlightsoundloop value=yes>

</APPLET>

 

The class file defines what the applet does. You cannot change the it unless you are a programmer. But you can modify the parameters, changing the images it displays, changing the sound files you want it to play, changing the sequence of events. The class files and paramters for every applet are different. Here's another example.

You will find a gallery of applets featured in the book on these pages. Refer to the book for an explanation of how each applet works, or visit the web site for the applet. You will find a URL for each applet at the top of the page. Most of these applets are free. A few require payment of a small licensing fee.

I have also provided a list of some useful software programs found on the book's CD-ROM.