The HTML Canvas, an element of the upcoming HTML 5 specification, allows you to efficiently draw arbitrary graphics at the primitive or individual pixel level. Find out how to implement a 3D rendering using the HTML Canvas.
AJAX techniques offer sophisticated GUIs on the web, but sometimes you need to execute commands at the command line. This article demonstrates how to build a custom command line you can add to your user interface—and even get a free run-time scripting engine.
When some applications crash, they offer the user a chance to submit information about the error. This information can help developers track down and fix bugs. This 10-Minute Solution demonstrates how to have your JavaScript/AJAX applications do the same thing.
JavaScript lacks a function for loading and executing a library file while it's executing a main program file. Implementing an include directive on the server side is a simple technique for getting around this limitation.
This article describes a generalized system for dealing with multidimensional arrays of data. It lets you transform and extract slices of data along various axes with very little code, in the style of the programming language APL. And you're not limited to numerical data; you can generalize systems such as this to any kind of tabular data.
By restricting all object data access to a callback mechanism, a Java server can contain all concurrency issues in a single place, making it much easier for you to see if concurrency constraints have been violated.
Sometimes Java's data structures use too much memory to store the data you need to store. In such situations, you can use the JNI native code interface to access native data structures. Find out how to use the STL in C++ to implement a space-efficient hashtable that works like a regular Java hashtable.
CGI is the most widely used protocol for Web programming, but it lacks basic programming constructs such as function calls. You can work around these weaknesses by encoding function calls directly into Web links easily creating active links—and you can do it in PHP, Perl, JavaScript, and Java.
Using sophisticated application frameworks to build your network server applications is fine, but sometimes these frameworks are overkill. With a little communications programming between PHP and Java, you can establish an extensible layer that handles the annoying details of creating a custom network protocol.
Larger applications frequently get loaded down with a heavy burden of unused library files. Learn to create a custom classloader that automatically builds a JAR file that contains only the classes you need.
Generics is one of the hottest features of the upcoming JDK 1.5 release. This article describes the new generics feature by investigating the example pre-release implementation provided by Sun. You'll use the generics feature to create an extensible multimedia application, and show how generics make the code simpler.
Learn about three of the most promising Java variants—how they work, what their features do, and how you can integrate them into your development environment.
A certification authority can provide authenticating certificates, which enable secure Web transactions in a system of trust that doesnt require any pre-built software or commercial services.
Making changes to memory-mapped files is a delicate operation, but far from impossible. Learn how to make safe, atomic changes to memory-mapped files using a checkpoint system that will leave your applications fast and robust and your data impervious to corruption.
Java's support of reflection enables you to create an interpreter that executes commands interactively. This article demonstrates how to build a reflection-based system that allows simple scripting of Java programs without having to install a special-purpose scripting language. It also provides a downloadable sample program.
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