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JavaWorld March 2001 Robert Nielsen |
Working in Java time If you know how to work with dates in Java, it is relatively easy to learn to work with time. This tutorial shows you how to bridge that learning gap...  |
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 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 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 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 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 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 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 June 2001 Jeff Friesen |
Object-oriented language basics, Part 3 The author explores composition and demonstrates its value in object-oriented programming. Composition and inheritance are design consepts related in a manner similar to both sides of the same coin...  |
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 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 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 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 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 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 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 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 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 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 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 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 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 February 2001 Brian Goetz |
Design for performance, Part 2: Reduce object creation 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. The author discusses some techniques for reducing temporary object creation...  |
JavaWorld December 2001 Brian Goetz |
Exceptional practices, Part 3 Exceptions provide a powerful mechanism for handling error conditions in Java programs. Part 3 covers message catalogs, a technique you can use to simplify the process of localizing your application for foreign markets. The use of message catalogs has additional benefits beyond localization -- they make it practical for documentation writers and human interface designers, rather than developers, to control the error messages.  |
JavaWorld January 2001 Brian Goetz |
Design for performance, Part 1: Interfaces matter 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...  |
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...  |
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 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 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 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 January 2, 2004 Allen Holub |
More on getters and setters This article provides one of several possible programmatic solutions to the get/set-elimination problem. In particular, it demonstrates how to construct both Web-based and client-side user interfaces without exposing your object's implementation to the entire program.  |
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 December 2000 Raghavan N. Srinivas |
Java security evolution and concepts, Part 3: Applet security This article will take a look at the challenges of security for, and the deployment of, applets...  |
JavaWorld September 2000 Michael C. Daconta |
Steer clear of Java pitfalls Avoiding Java programming problems can save you considerable time and frustration when developing programs. This month, Michael Daconta presents two API pitfalls and a long-standing bug.  |
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...  |