Articles : Tutorials :

DragonClock Applet and Tutorial

P & G Dragonsites present this tutorial on building your own Java clock applet.

Contents

Introduction

Object Oriented Programming and Java

Setting Up an Applet

Applet Methods

Other Required Methods

Adding the Applet to Your Webpage

The Java Applet

In the beginning, HTML pages were static and rather boring, and the world saw it and thought it was good. Then, the W3C said let there be a Common Gateway Interface, and webpages became interactive. Then, the W3C said let there be animation, and multimedia. Let video and audio stream forth over the face of the Web. And the Web begat virtual reality. And the Web became interactive to the point that the Web begat cable modems and T3s to handle the exploding bandwidth. Then, the Web begat a 'real live' programming language for use on its pages. And the Web called the language Java because the Web said this is like interactivity on caffeine. Actually, Sun Microsystems named the language, but it sounds better the other way.

Now that Sun Microsystems is no longer charging a fee for use of the Java Development Kit perhaps more people will explore the language. Java is an excellent language for use on the Internet. Not only can folks write anything in Java that can be written in C++, Perl or anything else, but Java can be directly embedded in HTML files as applets! The two major browsers, Microsoft Internet Explorer and Netscape Communicator, are Java-savvy.

Java can be devilishly complicated in its implementation of object orientated programming (OOP), especially for someone without a college degree in computer science. There are a great many programmers who got their start by hacking apart a downloaded program. For those self-made programmers, let me offer a tutorial on Java applets.

This tutorial will not make you a Java guru. You will not be able to call Java fire down from Java heaven. You will, however, have a basic understanding of Java and writing Java applets. It is assumed that you have downloaded the Java Development Kit and have purchased a book on the structure of the Java language. It is furthur assumed that you have some knowledge of and experience programming computers.

We also offer a zip file containing the following:

All five lessons
The source code
The compiled class file
An HTML file with the applet attached
A read-me file

Next ->

Java and java Development Kit are trademarks of Sun Microsystems. All material is copyright of P & G Dragonsites and may not be reproduced in whole or in part in any media without prior permission.
For questions or comments please contact us at pgdragonsites@thecenter.zzn.com

Reprinted with permission from the author. Click here to visit the original version
Download this tutorial (~30 KB)

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How to Add Java Applets to Your Site

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