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JavaWorld November 2001 Dirk Reinshagen |
Connect the enterprise with the JCA, Part 1 JCA is a standard that allows EIS systems to be reached from the J2EE platform. This article covers a variety of topics including a JCA overview, how JCA fits into an integration strategy, a comparison of JCA to EAI vendors' products, and limitations of the current JCA platform.  |
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 March 2002 James Carman |
Write once, persist anywhere Most J2EE applications strive to abstract the database tier by employing the Data Access Object design pattern. This article shows you a DAO pattern framework that you can reuse on all your projects, regardless of object type...  |
JavaWorld October 2000 Siva Visveswaran |
Dive into connection pooling with J2EE Connection pooling is a technique used for sharing server resources among requesting clients. This article focuses on support for connection pooling of both database resources and nondatabase resources in a J2EE environment...  |
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 September 2002 Jeff Friesen |
Packages organize classes and interfaces Professional Java developers organize frequently used classes and interfaces in class libraries for later reuse. Learn what constitutes a package, how to create a package of classes and interfaces, how to import packaged classes and interfaces into a program, and more.  |
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 June 2002 Dirk Laessig |
Score big with JSR 77, the J2EE Management Specification The specification's core is based on the model of managed objects, explained in this article. JSR 77 also defines an Enterprise JavaBeans (EJB) component for easily accessing these managed objects.  |
JavaWorld December 2000 Victor Okunev |
Validation with pure Java The importance of employing a good data-validation framework cannot be overestimated. The core Java API has everything you need to solve this problem in the most elegant way.  |
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 January 2002 Jason Cai |
Combine the Session Facade pattern with XML This article explores the benefits and advantages of using the Session Facade pattern. The author discusses when to use the pattern with value objects, and when to use it with XML. He also provides a detailed implementation of the Session Facade pattern integrated with XML...  |
JavaWorld September 26, 2003 David Geary |
Adopt Adapter Adapters let objects from unrelated software packages collaborate by adapting one interface to another. The Adapter design pattern can save you a lot of time and effort by combining disparate software systems.  |
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 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 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 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 March 2002 |
Letters to the Editor JavaWorld readers warn about synchronization; present a Servlet 2.2-compliant solution for mixing protocols in Web apps; suggest using the Data Object Access design pattern with the Value Object design pattern... etc.  |
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 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 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 May 2002 Ryan Daigle |
Eliminate JDBC overhead Most J2EE and other types of Java applications interact in some way with information persisted in a database. Interfacing with that database involves several iterations of SQL statements, connection management, transaction lifecycles, result processing, and exception handling. The many parts of this ritualistic dance are common in all contexts; however, this replication doesn't have to exist. This article outlines a flexible framework that remedies the repetition of interacting with a JDBC-compliant database.  |
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 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 February 2002 Anders Eliasson |
Implement Design by Contract for Java using dynamic proxies The Design by Contract (DBC) theory can dramatically raise software quality and reusability levels by forcing you to think in terms of contracts. Contracts formally specify the responsibility relationship between a client (class user) and a supplier (class). Additionally, DBC clearly separates specification (what) from implementation (how). This article explains DBC's importance in object-oriented development and describes a DBCProxy framework that achieves DBC transparently in Java using dynamic proxy classes.  |
JavaWorld May 2000 Jason Briggs |
Dynamic user interface is only skin deep A skin is a collection of images and a definition file, which together describe an application interface. Here are ways to use skins to customize your applets...  |
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 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 July 2002 Rinaldo Di Giorgio |
Serve clients' specific protocol requirements with Brazil, Part 6 This article demonstrates how to use the following technologies with the Brazil toolkit: Jini, BeanShell, and the Java API for XML Messaging (JAXM), Xalan-Java, servlets, Velocity, and LDAP. It also discusses the larger purpose of this series: to demonstrate how to use Brazil to support new technologies and APIs in ways that API developers might not have considered.  |
JavaWorld June 13, 2003 Jeff Friesen |
Datastructures and algorithms, Part 2 This article concludes a two-part series that explores two important computer science topics: datastructures and algorithms.  |
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 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 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 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 February 2002 Jeff Hanson |
Use Web services to integrate Web applications with EISs Web services expose business processes to bolster object-oriented and component-based programming with a services-based model. You can enhance your current programming model to support Web services by adding a service contract...  |
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 2002 Abulsorour & Visveswaran |
Business process automation made easy with Java, Part 2 Design options for rule engine integration, data synchronization considerations, workflow engine integration, and some best-practice quality-of-service considerations. Also, emerging data interchange standards that enable a more flexible solution  |
JavaWorld March 2003 David Geary |
An inside view of Observer The Observer pattern lets you build extensible software with pluggable objects by allowing communication between loosely coupled objects. The author explores the Observer pattern, how it's used throughout the Java 2 SDK, and how you can implement the pattern in your own code.  |
JavaWorld November 2000 Abhilash Koneri |
Eliminate tedious programming: Recover data with XML and Reflection The parsing of ResultSets forms one of the most significant tasks involved in retrieving data from a database. But, as a repetitious and uninteresting assignment, it is not a favorite among developers. How to supplant ResultSet parsing in the data access objects...  |
JavaWorld September 2001 Wally Flint |
Access control for partial exposure With Java's built-in access control, you can't expose fields and methods to some classes in a package, while hiding them from others in the same package...  |
JavaWorld June 13, 2003 Camerlengo & Johnson |
Make the Java-Oracle9i connection This article provides Java programmers with techniques for utilizing Oracle9i's new object-oriented features such as inheritance, custom constructors, dynamic dispatch, array descriptors, and mapping strategies from a Java class hierarchy to an Oracle type hierarchy without using traditional object-relational (O/R) mapping strategies.  |
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 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 June 2000 |
Letters to the Editor (June 23, 2000) Jason Hunter addresses a gripe with calling instanceof when using JDOM; Mark Johnson responds to feedback on his XML series; reader challenges Tony Sintes about whether it truly is impossible to write a swap method...  |
JavaWorld November 2001 |
Letters to the Editor Should you enable assertions in a production system? What's the difference between Jxta and Jini? Do access modifiers prevent inheritance? Is MVC a design pattern?  |
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 September 2002 Visveswaran & Abulsorour |
Business process automation made easy with Java, Part 1 Business process automation initiatives are transforming today's enterprises by optimizing efficiencies, reducing costs, and increasing shareholder value. This article explains existing J2EE-centric rule engine solutions, as well as where and how they fit within an enterprise architecture.  |
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.  |
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 October 2000 Robert Hustead |
Mapping XML to Java, Part 2 This article develops a SAX API-based class library that is easily extended to create XML-to-Java mapping code. First, we explore the important ideas that drive the need for the class library. Then we develop a basic approach for implementing the library as well as a few samples that demonstrate some more advanced topics on parsing XML with the SAX API...  |