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JavaWorld September 2001 Jeff Friesen |
Object-oriented language basics, Part 6 Learn why Java's standard class library contains empty interfaces (such as Cloneable and Serializable). Also, examine the power of interfaces and learn why they provide more than a workaround for Java's lack of multiple implementation inheritance support...  |
JavaWorld September 2002 Erik Eide |
Manage your software with the Java Product Versioning Specification This article introduces the Java Product Versioning Specification and functionality built into the Java platform designed to support the evolution of software products and components in a simple, standardized manner.  |
JavaWorld November 2000 Geoff Friesen |
Applications, applets, and hybrids This article establishes our bearings and sets sail to the land of applications, applets, and hybrids (an unusual category of Java programs)...  |
JavaWorld November 2001 Jeff Friesen |
Class and object initialization An exploration of class and object initialization, which introduces the strange concepts of the <clinit> and <init> methods...  |
JavaWorld February 2002 Jeff Friesen |
Classes within classes As with fields and methods, Java allows classes to be members of other classes. This article explores Java's support for class nesting...  |
JavaWorld December 2000 Michael C. Daconta |
When Runtime.exec() won't This installment of Java Traps discusses one new pitfall and revisits another from the previous column. Originating in the java.lang package, the pitfall specifically involves problems with the Runtime.exec() method.  |
JavaWorld October 2002 Jeff Friesen |
Java's character and assorted string classes support text-processing Text-processing is one of the more frequent activities in which computer programs engage. Java supports that activity via the Character, String, StringBuffer, and StringTokenizer classes. This article explores each class and introduces you to an assortment of those classes' methods.  |
JavaWorld October 2001 Jeff Friesen |
Object-oriented language basics, Part 7 This final installment of Java 101's object-oriented programming series explores Java's support for polymorphism and investigates how abstract classes accommodate generalities in class hierarchies.  |
JavaWorld August 2001 Jeff Friesen |
Object-oriented language basics, Part 5 Every Java class has a superclass. In the absence of an extends keyword, Object is that superclass. Object takes center stage as this article presents its 11 methods...  |
JavaWorld May 2001 Jeff Friesen |
Object-oriented language basics, Part 2 In this article, you'll gain an understanding about fields, parameters, and local variables and learn to declare and access fields and methods...  |
JavaWorld April 2001 Geoff Friesen |
Object-oriented language basics, Part 1 An introduction to object-oriented programming and how to declare classes and create objects from those classes...  |
JavaWorld October 2001 |
Java 101 study hall Brush up on Java terms, learn tips and cautions, and enter the first Java 101 reader challenge  |
JavaWorld February 2002 Dirk Reinshagen |
Connect the enterprise with the JCA, Part 2 This article demonstrates a simple JCA (J2EE Connector Architecture) adapter implementation. After you read this article, you'll possess a good understanding of how to build your own JCA adapter...  |
JavaWorld April 25, 2003 Anthony Karre |
A do-it-yourself framework for grid computing Large-scale grid computing frameworks can be successfully used to build computational grid infrastructures, but their sophistication can also be a barrier for software designers experimenting with entry-level grid computing.  |
JavaWorld October 3, 2003 Dawid Weiss |
Discover new dimensions of scripted Java This article presents an extension to BeanShell that turns scripts into real Java classes that support inheritance, Java reflection, method overriding, and so on. The extension is designed to be fully transparent to the Java application using it.  |
JavaWorld April 11, 2003 Mitch Gitman |
Axis-orizing objects for SOAP Axis is an open source Java framework for implementing Web services over XML-based SOAP. This article guides the reader through the minefield of developing and deploying a sophisticated Web service using Axis.  |
JavaWorld September 26, 2003 Sam Mefford |
Overcome Java 1.3-1.4 incompatibilities API version incompatibilities that force you to maintain separate codebases for newer versions can exponentially increase your frustration level. This article demonstrates techniques for overcoming interface version incompatibilities, charting a course for a single codebase.  |
JavaWorld February 2001 Oliver Enseling |
iContract: Design by Contract in Java The Design by Contract technique stresses the importance of explicitly specifying the constraints that hold before and after a software component executes. The iContract Java language extension implements Design by Contract for Java.  |
JavaWorld February 2003 Laurence Vanhelsuwe |
Unwrap the package statement's potential The package statement is a very powerful Java language feature. Yet most Java programmers, even experienced ones, fail to correctly exploit this power. Intrigued? Read on and see how a simple language feature can have massive repercussions downstream.  |
JavaWorld November 2001 Wm. Paul Rogers |
J2SE 1.4 premieres Java's assertion capabilities, Part 1 J2SE (Java 2 Platform, Standard Edition) 1.4 adds a simple assertion facility to Java. This article, the first in a two-part series, covers the mechanics of using the new assertion facility...  |
JavaWorld November 2001 Michael C. Daconta |
Practice makes perfect One pitfall stumbled on while porting an Extensible User Interface Language (XUL) game to Java and two pitfalls sent in by readers...  |
JavaWorld January 2001 Wm. Paul Rogers |
Thanks type and gentle class Confusing the concepts of object and class deserves an askance look. Failing to distinguish between type and class, however, typically goes unnoticed. Yet the battle to separate implementation and interface concerns requires type-oriented thinking...  |
JavaWorld July 2000 Jacob Weintraub |
Learn how to store data in objects In this second installment of Java 101, Jacob Weintraub delves into storing data in Java and the various ways you can use that data. Specifically, he examines how objects store data and how you can pass data to objects in method calls...  |
JavaWorld January 2002 Tarak Modi |
Axis: The next generation of Apache SOAP Apache SOAP has evolved to the point of its own extinction. Apache's Axis project is a complete re-architecture of its SOAP implementation and has many new features previously unheard of in Apache SOAP. Here's a high-level look at how Axis takes Apache SOAP to the next level...  |
JavaWorld July 25, 2003 David Geary |
Make your apps fly Allocating numerous objects can degrade your application's performance. This article shows how to implement the Flyweight design pattern to greatly reduce the number of objects your application creates, which decreases your app's memory footprint and increases performance.  |
JavaWorld February 2001 Robert Nielsen |
Learn Java from Ben Franklin While Benjamin Franklin never wrote a line of Java code, his techniques for better writing can be applied to writing Java. Anyone with at least a basic grasp of Java can use Franklin's learning methods...  |
JavaWorld September 19, 2003 Brian Connolly |
Client quality reporting for J2EE Web services This article implements a general-purpose architecture for recording client response times for J2EE Web services. The sample implementation was built using the Sun ONE Application Server and IDE, but the general approach can be easily adapted to other J2EE implementations.  |
JavaWorld August 2001 Bill W. Davis |
Dynamically extend Java applications Do you want to write programs that can be extended without source code changes? The techniques described in this article show you how to use interfaces and dynamic class loading to create highly extensible systems...  |
JavaWorld October 3, 2003 Allen Holub |
Create client-side user interfaces in HTML This article presents a variant on Swing's JEditorPane that makes it possible to specify an entire screen of your client-side user interface (UI) in HTML.  |
JavaWorld February 2001 Geoff Friesen |
Non-object-oriented language basics, Part 3 This exploration of Java's non-object-oriented language entities wraps up with a tour of statements. It provides an in-depth discussion on those source code constructs and demonstrates their proper use through a large example program...  |
JavaWorld December 2000 Robert Nielsen |
Calculating Java dates Whether you are dealing with financial transactions or planning future activities, you need to know how to create, use, and display dates in a Java program. That requires more than simply looking up the appropriate class in the API reference: just one date can easily involve creating objects in three date-related classes. This tutorial shows what you need to know.  |
JavaWorld June 2001 Michael Daconta |
An API's looks can be deceiving When you examine an API, your first impressions are often wrong. The author examines two cases where an intuitive model of how an API should work trips over the complexity of implementation details...  |
JavaWorld October 2000 Michael Cymerman |
Automate your build process using Java and Ant Ant is a powerful scripting tool that lets you craft build processes around your code requirements using predefined tasks and provides expansion capability to handle even more difficult tasks...  |
JavaWorld October 2000 Bruce Eckel |
Everything is an object, Part 2 Eckel takes you through name visibility and using components from other libraries; the static keyword; and comments and embedded documentation. By the end, you should be able to build your first Java program...  |
JavaWorld July 2001 Michael Cymerman |
Device programming with MIDP, Part 3 This article explores the methods of communication between the MIDlet and the world at large. Using the APIs contained in Java 2, Micro Edition's Mobile Information Device Profile (MIDP), developers can interact with external systems...  |
JavaWorld August 2001 Vincent DiBartoloi |
Track class file versions Sometimes even the most carefully controlled environments can get corrupted. With jar files being pushed prematurely and source files being updated constantly, determining which version of the compiled source file was pushed to the now-corrupt environment can be difficult...  |
JavaWorld July 2000 Todd M. Greanier |
Flatten your objects The Java Serialization API is used by many other Java APIs (like RMI and JavaBeans) to persist objects beyond the duration of a running virtual machine. This article tries to demystify the secrets of the Java Serialization API.  |
JavaWorld October 2001 Tony Loton |
JavaMail quick start This article shows the first steps on the road to building Java-based email applications. If you fancy building your own email client to replace Microsoft Outlook, or a Web-based email system to rival Hotmail, this is the place to start...  |
JavaWorld May 2001 Thierry Manfe |
Embed Java code into your native apps Embedding Java code into a Unix application developed in C or C++ can create problems related to GUIs or threads synchronization. Here's a solution that relies on a good understanding of the Unix APIs and robust software architecture...  |
JavaWorld January 2001 Gregg Sporar |
Retrofit existing applications with RMI Partitioning an existing application so it is distributed across multiple CPUs is easy using Java's Remote Method Invocation (RMI). However, RMI must be carefully introduced into existing source code...  |
JavaWorld October 2002 |
Letters to the Editor Is JAAS responsible for retaining user data? Do the JVM and compiler share literal pool responsibilities? Is there a tool that performs manifest version incrementing? JavaWorld authors answer those questions and more in this month's Letters to the Editor.  |
JavaWorld August 2002 Greg Holling |
Put Java in the fast lane This article presents some techniques for locating performance bottlenecks in Java applications and offers suggestions for improving Java performance. Along the way, you'll look at some of the classes in the new java.nio package.  |
JavaWorld March 2001 Brian Goetz |
Design for performance, Part 3: Remote interfaces 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. This article examines performance issues specific to remote applications...  |
JavaWorld April 25, 2003 |
Letters to the Editor Authors discuss static versus lazy resolution; HTML/JavaServer Pages (JSP)/servlets versus Swing; thread safety with singletons; and more.  |
JavaWorld March 2001 Michael C. Daconta |
Dodge the traps hiding in the URLConnection class This article focuses on problems with posting to an HTTP URL and the bane of new Java programmers, the NoClassDefFoundError...  |
JavaWorld August 2001 James Caple & Mike Haim Altarace |
The art of EJB deployment This article tackles the issues you might encounter when deploying the same EJB code on different application servers -- namely BEA's WebLogic, IBM's WebSphere, and the open source community's JBoss. In addition, it highlights some preparation techniques for your EJB deployment...  |
JavaWorld September 2000 Bruce Eckel |
Everything is an object, Part 1 This two-part article, excerpted from Chapter 2 in Thinking in Java 2nd. ed., moves you to the point where you can write your first Java program. Bruce Eckel gives an overview of the essentials...  |
JavaWorld December 2000 Tony Loton |
Make an EJB from any Java class with Java Reflection Creating EJB versions of your classes and converting the applications that use them can be time-consuming -- unless you automate the process. Read on to find out how you can automate the routine aspects of EJB development by using Java Reflection...  |
JavaWorld April 2001 Tarak Modi |
Clean up your wire protocol with SOAP, Part 2 Creating applications that use SOAP is not difficult, and Apache SOAP makes it even easier. Part 2 of this four-part series on SOAP will introduce you to Apache's SOAP implementation and walk you through some simple examples that demonstrate the essence of creating SOAP-based apps...  |
Home Toys August 2004 Gary Drake |
Using a Low Cost Personal Computer to Create a Web Enabled Monitoring System With a little care, free software and Automation from BroadbandSentry your old desktop computer can be converted to monitor the Status of your home or office.  |