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Based on the Darwinian principle of survival of the fittest, genetic programming uses mutation and replication to produce algorithms for creating ever-improving computer programs. In this column, you'll get to know the genetic algorithm in simple...

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Those who use Perl as a programming language frequently forget that it is just as useful as a quick and dirty scripting engine for command-line operations. From the command line Perl can accomplish, in just a single line, tasks that require pages...

Creating an XML-RPC Web service with Perl is almost as easy as CGI scripting. This article will bring you up to speed on what XML-RPC is and how to use Perl's Frontier::RPC library to create simple clients and servers. Included are samples of...

Applets have always been designed to play in a "sandbox" in which they can't hurt anything on a user's system, so their security is tighter than that of their server-based application counterparts. But what if you want an applet that can...

JDBC provides a powerful, comprehensive interface for accessing databases from Java programs. For smaller projects, JDBC can seem overwhelming, driving some programmers to avoid using a database altogether. This article describes a simple wrapper...

JDK 5.0 added major new support for developing concurrent applications, including JVM changes, new low-level synchronization utilities, and higher-level, thread-safe, high-performance concurrency classes such as thread pools, concurrent...

Annotations, a new feature in J2SE 5.0 (Tiger), brings a much-needed metadata facility to the core Java language. In this first of a two-part series, author Brett McLaughlin explains why metadata is so useful, introduces you to annotations in the...

The WebSphere Studio Application Developer for Linux and Windows, a tool built on the WebSphere Studio Workbench, is a pluggable tool-development and integration platform that incorporates the technology of the recently announced Eclipse...

Wireless programming using the Java platform can be a bit tricky. Let J2ME expert Wes Biggs light the way in this new discussion forum.

Brett McLaughlin continues his JSP best practices series with a look at the various techniques for adding time stamps to your JSP pages, as well as the ways that this simple modification can enhance the usability of your Web site.

Learn about an adaptable approach which separates programming tasks from Web page design tasks. This strong conceptual model encourages good design, enables re-use of data definitions, and is well-suited to the construction of dynamic user...

Qualcomm's BREW is proving an increasingly addictive end-to-end wireless development solution, although it does come with a hitch. In this month's Roaming charges, Larry Loeb chats with the folks at Qualcomm about the pros and cons of the...

As more and more application servers that comply with the new J2EE 1.4 spec become available, Java developers will have to consider how -- and if -- they should migrate their J2EE 1.3-compliant code. In this article, David Currie takes a look at...

Emacs is one of the most popular development environments in the history of software programming, so it's no surprise that there are a number of excellent Emacs tools for Java programming. This article examines three of the best tools to alter...

This tutorial shows you how to build a Web service using the Eclipse Web Tools Platform. The Web service interacts with a Cloudscape (Apache Derby) database and is deployed to Apache Tomcat.