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JavaWorld
December 2001
Bill Pierce |
Diagnose common runtime problems with hprof Ever been a few days from releasing an application when testing reveals a memory leak or something causing the CPU to spin out of control? Few people realize that the Java 2 JDK provides a useful profiling tool called hprof, which you can use to diagnose these behaviors with minimal fuss...   |
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
Brian Goetz |
Tweak your IO performance for faster runtime Although poor performance claims have plagued Java for some time, Java programs can run just as quickly as programs written in C and C++ if developers pay attention to performance issues throughout the development cycle, especially in IO... |
JavaWorld
September 2001
Michael T. Nygard |
Master Merlin's new I/O classes The JDK 1.4 beta -- the Merlin release -- unleashes hundreds of new classes. This article walks you through some of the platform's new I/O (input/output) capabilities: nonblocking I/O, character conversion, memory-mapped files, and buffer management... |
JavaWorld
March 2001
Geoff Friesen |
The ins and outs of standard input/output The author focuses on standard I/O. The mechanism uses devices for inputting and outputting data and still plays a role in modern GUI (graphical user interface) operating systems... |
JavaWorld
September 2001
Ashok Mathew & Mark Roulo |
Accelerate your RMI programming Beginning with JDK 1.1, serialization and Remote Method Invocation (RMI) were added to the Java platform. RMI usually runs slower than equivalent CORBA or remote procedure call (RPC) solutions. Fortunately, RMI was designed so that you could apply hand optimizations... |
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
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
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
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 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
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
February 2002
David Geary |
Take control with the Proxy design pattern The Proxy design pattern in Java lets you substitute a proxy for an object. In that capacity, proxies prove useful in many situations, ranging from Web services to Swing icons... |
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 2001
David Geary |
Decorate your Java code The Decorator design pattern lets you attach responsibilities to objects at runtime. This pattern proves more flexible than inheritance, which is static... |
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
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
March 2002
Jeff Friesen |
Exceptions to the programming rules, Part 1 Learn about exceptions and how to handle them in C, C++, and Java. Learning how to handle exceptions in various languages gives you an appreciation for why exception handling works the way it does in Java... |
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 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
October 2001
David Geary |
Amaze your developer friends with design patterns Design patterns are proven techniques for implementing robust, malleable, reusable, and extensible object-oriented software. This article introduces design patterns to Java developers and explores Strategy, Composite, and Decorator -- three common, yet powerful, design patterns in the JDK... |
JavaWorld
May 2, 2003
Jeff Friesen |
Datastructures and algorithms, Part 1 After presenting basic datastructure and algorithm concepts, this article focuses on the array datastructure and associated algorithms. The article concludes with the assertion that Java's arrays are objects. |
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
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
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
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
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
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 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 2002
David Geary |
Strategy for success The Strategy design pattern embodies two fundamental tenets of object-oriented design: encapsulate the concept that varies and program to an interface, not an implementation. This article shows how to use the Strategy pattern to implement an extensible design... |
JavaWorld
November 2000
Jack Shirazi |
Optimize a query on a Map In this article, Jack Shirazi works through optimizing queries on Map classes. He uses a variety of performance-tuning techniques. The techniques are directly applicable to most queries, and the results of those techniques show up to a tenfold speed increase... |
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
December 2000
Mark Johnson |
C#: A language alternative or just J--?, Part 2 Despite their enormous similarities, Java and C# differ greatly in many language details and also in their basic technical intent. This second article of a two-part series covers C# language constructs and concludes with some speculation on the idea of standardizing C#... |
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
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
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
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
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 2001
Allen Holub |
Warning! Threading in a multiprocessor world Many authors (myself included at one point) advocate the double-checked locking idiom to access a Singleton object in an intuitively thread-safe way. Unfortunately, for counterintuitive reasons, double-checked locking doesn't work... |
Linux Journal
January 11, 2006
Collin Park |
Why Not Python?, Part 2 Follow along as an old C hacker drags himself into the late 1990s by solving a Sudoku puzzle with Python. |
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
December 2000
Jean-Pierre Dube |
Printing in Java, Part 2 How to print your first page, and how to use the more advanced classes of the Java Print API... |
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 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... |
Linux Journal
May 2000
James Norton |
Dynamic Class Loading for C++ on Linux A technique that will provide developers with much flexibility in design. |
JavaWorld
July 2002 |
Study guide: Achieve strong performance with threads, Part 3 Glossary of terms... Tips and cautions... Homework... Answers to last month's homework... |
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... |
