Imagine the following: Process A on machine B puts an object into a Hashtable. Now, a separate process C on a different machine D can access that object from its own local copy of the Hashtable -- even after process A terminates and the virtual machine unloads! Now imagine all this is achieved without the use of RMI, and without involving an ORB, CORBA, EJB, or a database. What's the secret? The Java Naming and Directory Interface (JNDI). This month's tool is the JNDIHashtable -- which, as its name reveals, uses JNDI to do its thing More info

HelloWorld application using Eclipse Forms API More info

An advanced Java tutorial going into depth on all of the more advanced elements of the Java programming language. More info

Building and maintaining enterprise applications is very difficult. Designing elegant and easily maintainable user interfaces for these applications can be the most daunting task of all. The Struts framework from the Apache Jakarta Project has brought Model 2 architecture to J2EE (Java 2 Platform, Enterprise Edition) applications. In this article, Michael Coen and Amarnath Nanduri discuss the issues that face developers using Struts and their approaches to simplifying these problems. More info

Many common Java performance problems stem from class-design decisions made early in the design process, long before most developers even start thinking about performance. In this series, Brian Goetz discusses some common Java performance hazards and how to avoid them at design time. More info

In this article, I'll show how to use MVC in a Web-based project. My controller will rely on Reflection API to dynamically call action methods, redirect to proper views, and coordinate data flow between presentation and model layers. More info

Java Web Start, a new technology to assist the development of client-side Java applications, is unique in that it frees you from concerning yourself with how the client is launched, either from a Web browser or from the desktop. Additionally, this technology provides an encompassing deployment scheme that enables a Web server to independently distribute and update client code. This article introduces this enterprising new technology, which is scheduled to be integrated in the final release of Java 1.4, describing its implementation from both the developer and the user perspective. More info

In part two of the J2ME tutorial you will create the user interface (UI) elements of a MIDlet. Since the interaction with a user is a paramount concern in any MIDlet, due to the size of the screens, it is important for you to understand the basics of this side of MIDlets. Any interaction with a user is done via a UI element. More info

Storing bytes of data locally on a device equipped for the Mobile Internet Device Profile (MIDP) is easy. MIDP allows you to store arrays of bytes. But what if the data you need to store isn't in the form of bytes? And how can you make the data small enough so that storing it on a device with a relatively small amount of memory is not a problem? That's where this article comes in. More info

Dates are one of the most fundamental data types, so any language or database provides support for them, either built in or as a class library. Java is no exception; the Java API provides support for representing, computing, comparing, displaying, and parsing dates in a portable, cross-platform and language-independent way. In this article I present a custom control for Swing that allows you to visually pick a date instead of typing it. This way you can avoid invalid dates altogether and offer the user a visual clue as a bonus. More info