- Paperback: 304 pages
- Publisher: Apress; Softcover reprint of the original 1st ed. edition (February 16, 2004)
- Language: English
- ISBN-10: 1590592832
- ISBN-13: 978-1590592830
- Product Dimensions: 7 x 0.6 x 9.2 inches
- Shipping Weight: 1.2 pounds (View shipping rates and policies)
- Average Customer Review: 3.9 out of 5 stars See all reviews (15 customer reviews)
- Amazon Best Sellers Rank: #4,470,871 in Books (See Top 100 in Books)
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Pro Jakarta Commons Softcover reprint of the original 1st ed. Edition
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From the Inside Flap
FROM THE FOREWORD BY GEIR MAGNUSSON, JR.
In the foreword to The Cathedral and the Bazaar (OReilly, 2001), Red Hat Chairman and CEO Bob Young identified two things that must happen if open-source software is going to make a lasting change: Open-source software must become widely used, and the users of the software must communicate and understand the benefits of the software development model.
I think that Jakarta Commons has succeeded on both fronts.
As one of the founders of the Jakarta Commons, I am utterly amazed at the success of the project as it nears the third anniversary of its founding. We knew what we did was going to be useful, but we didnt understand the extent to which the code and the community would grow. There are now 28 released components, 20 in progress in "the Sandbox," and lively, continuous discussion and debate on the mail listsgenerally more mail traffic than a person can keep up with. Components have grown and "left the nest"for example, Jakarta Cactus, the server-side testing framework, began as a Commons component. Most important, community participation has blossomedfrom the 10 original committers, we have expanded to 82 as of this writing.
A bit of history: In early 2001, several of us working in various Jakarta subprojects noticed we had a problem. The subprojects had implemented a substantial variety of useful utility packages without any thought of reuse outside of each packages subproject. The result was that subprojects would reimplement (or copy outright) useful utility code from others. More important, we knew we had a trove of software to share but no way for people to find that software and obtain it in a simple and useful package. Driven by the motivation to make that software available and an open community debate on what the solution should be, Jakarta Commons was bornand since has become the place where Java programmers first look for help to solve common problems in server-side and client-side development.
The software is widely used throughout the Java world, both in commercial and open-source software. This familiar set of building blocks helps both developers and users: Developers have well-understood tools to work with, and users are familiar with the configuration and functionality of subsystems such as connection pools when they come from Jakarta Commons.
Equally as important, the growth of the community reflects the continued success of the software development model called open source. New components and improvements to existing components are driven by developers and users understanding that they can, to use the standard cliché, "scratch their itch." After showing up, all they need to do is contribute.
To that end, Harshad Oak, in Pro Jakarta Commons, brings what some may consider the rarest of contributions to open-source projects: comprehensive documentation. In this book, he covers 16 popular components. In each chapter, youll find not only background and motivation for the components but, for the working programmer, something even more valuable: code examples. With this book in hand, novice as well as experienced developers will be better able to take advantage of the treasure trove of useful utilities that is Jakarta Commons.
I encourage you to use this book, and the software it describes, to its fullest potential. And then if you have an improvement or an idea for something new, show up at "the Commons" and scratch that itch.
About the Author
Harshad Oak has been involved with J2EE projects for several years. He holds a master's degree in computer management and is both a Sun Certified Java Programmer and a Sun Certified Web Component Developer. Harshad has worked primarily with JSP, Servlet, EJB, and web publishing frameworks, while using a range of modeling and middleware tools along the way. The projects he has worked with have been in the payment solutions and insurance industries.
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Top customer reviews
The book is well-organized with an introduction, each component of Apache/Jakarta Commons is listed with its features succinctly summarized. Subsequent chapters delve into the details of the components that are used most often. I found the Validator, Digester, BeanUtils and HttpClient sections the most useful for my purposes, but all detailed sections are clearly presented and of value. The presentation includes informative examples that a reader can test out to assist in solidifying understanding.
Despite being somewhat dated I highly recommend the book to any Java programmer of any skill level.
I found the book to be a good introduction to the Jakarta commons libraries. While it is very dificult to cover the wide range of jakarta commons in just cca. 200 pages, the author made a selection of what he think it was the most important topics:
Lang, Logging, Validator, BeanUtils, pool, dbcp, Digester, collections, primitives, httpclient, fileupload, net, dbutils, codec, jxpath, discovery.
Some topics are covered in more deep than others. For example JXPath covered in just cca. 5 pages is not a worth. The "fast reviewed" topics are:
dbutils, codec, jxpath, discovery.
All in all, I think the book is an good introduction to of Jakarta commons libraries.
A worth buy to anyone trying to save time by reusing the excelent code written for one of the most recognized communities in the Open Source world: The Apache Software Foundation.
If you are new to the Commons then I might recommend it to you; but the material in here is available from [...] and it will stay 'fresh' on the website, as opposed to this book. I'd point you to there first. If you are looking for another 'roadmap' or organization of the material, then this book is for you.
If you are already familiar with the Jakarta Commons, pass on this book.
Mr. Oak does an amazing job of "getting down" on this material. Diagrams, tables and lots and lots of Java code examples make this handy and a valuable keeper of a book. By definition, once a common package leaves the sand box and becomes production ready, they strive to keep the interface backward compatible so these examples will serve you a good long while. It's also a very good read should one want to go cover to cover as the writing is clear and has that "just right" balance of simplicity and detail.
This book is an introduction to the most commonly used classes found in Jakarta Commons. Not all the components are covered. For example, Betwixt, Jelly, Jexl, and Codec are barely mentioned. However, the components that the author discusses are the most useful and are generally well covered. The book starts off slowly with an introduction to Jakarta Commons and then a brief and incomplete look at the Lang component. This chapter will give you no more than a flavor of what is available. The Logging component is well covered although I would probably never use it and the coverage of the Validator component should have concentrated solely on implementation outside of Struts and left Struts explanations to books on Struts. The remaining chapters cover the more useful components including Digester, Pooling, BeanUtils, and FileUpload and do a great job of explaining the components and providing realistic examples of usage.
Anyone who is writing Java code should be interested in the Jakarta Commons and anyone who is interested in Jakarta Commons should have a copy of this book. It will serve both as a good introduction to Commons components and a reference to using those components.