WEBLOGIC SERVER 6.0 REVIEW INSIDE PAGE 30 TM The World’s Leading Java Resource Java COM June 2001 Volume:6 Issue:6 FREE! PRODUCT Sept 23–26, 2001 New York, NY PAGE 16 SHOWCASE CD! INSIDE! SHOW PROGRAM 183 From the Editor by Alan Williamson pg. 7 Industry Commentaries by Richard Green pg. 8 by Bruce Scott pg. 146 EXCLUSIVE: INTERVIEW WITH KEYNOTER...SCOTT DIETZEN Product Reviews Sun Blade pg. 20 WebLogic 6.0 pg. 30 JDJJ2EE: The Challenges and Pitfalls of J2EE Chris Kampmeier 36 ServletExec pg. 54 iPlanet pg. 62 2.0J2EE: Growing JSP and Servlet Sites Patrick Sean Neville 44 J2EE Editorial SPECIAL FOCUS by Ajit Sagar pg. 22 ON J2EE, J2SEJ2EE: & J2ME WebSphere Column Brady Flowers 56 Interview J2EE: The Impact of EJB 2.0 Tyler Jewell 64 Larry Freeman, Manager J2EE Blueprints Team pg. 26 J2SE: Building a Telephone/Voice Portal Klinner & Walker 78 First Look Optimal J pg. 140 J2SE: Making a Mountain out of an Anthill Neal Ford 86 J2ME Editorial J2SE: JNI Programming in C/C+ Blair Wyman 96 by Jason Briggs pg. 144 J2SE: Evolving Functionality Satya Komatineni 104 $AVE BIG J2SE: Optimization and Java Irvin J. Lustig 110 J2SE: Using JavaBeans in Dreamweaver Barbarelli & Deming 118 J2SE: Deployment of JavaServer Pages John Goodson 126 J2SE: Java Quirks – Dates and Calendars Roedy Green 134 ONE-TIME OFFER! J2ME: The Incredibly Shrinking Platform Jason Briggs 148 Stop by our booth for special pricing J2ME: A UI Framework for the MIDP API Glen Cordrey 154 J2ME: Java Thick Clients with J2ME Glenn Coates 164 Sonic Software www.sonicsoftware.com 2 JUNE 2001 Java COM Zero G www.zerog.com/installs JUNE 2001 3 Java COM BEA www.developer.bea.com 4 JUNE 2001 Java COM BEA www.developer.bea.com JUNE 2001 5 Java COM TogetherSoft www.togethersoft.com/jdjspecial.html 6 JUNE 2001 Java COM FROM THE EDITOR ALANWILLIAMSON, EDITOR-IN-CHIEF The rational The Dawn alternative of Content Version 4.5 t has been one hell of a journey to get where here at JDJ are looking forward to working with we are today. What you’re holding in your him. Introductory Offer Ihands is the first of the new breed of Java At the time of writing we haven’t made a Developer’s Journal. On behalf of the team firm decision on our J2SE editor. Choosing an $2995 here, allow me to introduce JDJ 2.0. editor is something we don’t take lightly; for Teamwork Server This has been the accumulation of however, I am interviewing a number four months’ preparation, and we of people at JavaOne, so I’ll let you hope you like the new look and feel know next month. of your beloved JDJ. We aren’t In addition to bringing you quite settled in yet, as this issue is J2EE richer content, we’re going to be All 9 UML diagrams the crowning glory of the year, running a series of beginner’s fea- Additional Features: with JavaOne, and it kind of throws tures to ease the learning curve that • Performs Java, C++ or CORBA IDL out the normal rules of engagement. many of you experience when starting code round-trip engineering (code One of the first changes you’ll notice out on the Java road. We’re looking to generation and reverse engineering); is the three major sections of the magazine that make the transition easier for our beginners and recognizes JavaDoc comments. This feature allows you to write code, reverse reflect the three editions of Java 2. We’ll be to help nurture them into world-class develop- engineer, make changes to the model focusing on each edition with equal journalis- ers. We’ve lined up some great writers for this and re-generate the code without losing tic flair. There’s a lot going on in the Java series and I look forward to introducing this any implementation specific information. space and we want to bring you the feature to you next month. • Supports UML 1.3 notation. best of the best each and every As editor-in-chief I have a • Saves diagrams as bitmap PNG/JPG and month. responsibility to set the tone of the scalable WMF/SVG/EPS/DXF formats. As you know, the Java spec- magazine and ensure continuity • Provides XML interoperability — native trum is simply too wide for one J2SE each month. Those of you familiar model files are stored in XMI format. single person to effectively report with my writings know I’m pas- • Integrated with Forte for Java (FFJ) IDE the latest goings-on. To that end we sionate about a number of areas of versions 1.0 and 2.0. have invited people who are Java and that I’m not scared to whip renowned in their respective fields to up a debate about any of the subjects. Standard Edition: . $249 become section editors. These editors are However, there is one area that I wish to cham- Professional Edition: . $499 responsible for editing and sourcing the con- pion – the overall quality of the skill base of our tent for each section. You would think it makes new recruits to the Java community. With the Visit us at Java One my job easier, but sadly it doesn’t seem to work help of our section editors and Advisory Panel out quite like that. If anyone can figure we’ll be delivering articles for all skill lev- that out, let me know! els, from beginner right up to top- Floating License . $100 additional Ajit Sagar has kindly accepted notch developer. the role of J2EE editor and, if his As I pack my kilt in preparation Upgrade for a $69 annual fee! work for this issue is anything to for JavaOne, I hope I get to meet go by, our J2EE section is in great J2ME and talk to a lot of you while I’m hands. I look forward to working out there. If you see a strange-look- with Ajit in subsequent issues as we ing bugger in a skirt, be sure to stop C bring you cutting-edge, J2EE-focused him; chances are it’s me! If it’s not, I articles. please apologize and quickly move on. I’m ✦ G ✦ ▲✦ For our J2ME section I feel fortunate in more than happy to talk to you about what M snagging a great writer and authority on this we’re up to here at JDJ and welcome your feed- No Magic... new emerging field. Jason Briggs joins us in back. Just Technology That Works earnest in the next issue, and I know that we I look forward to serving you in the future… Download fully functional demo at: [email protected] www.magicdraw.com AUTHOR BIO contact us at Alan Williamson is editor-in-chief of Java Developer’s Journal. In his spare time he holds the reins at n-ary (consulting) Ltd, one of the first [email protected] companies in the UK to specialize in Java at the server side. Reach him at [email protected] (www.n-ary.com) and rumor has it he welcomes all suggestions and comments! 100% Pure Java Application JUNE 2001 7 Java COM INDUSTRY COMMENTARY WRITTEN BY RICHARD GREEN Train Once,Write Anywhere ince its introduction in 1995 Java technology has been worry less about memory size and more about page size. J2SE known for its “cross-platform” compatibility. This ability They’re game, map-application, and e-commerce shopping Sto run applications on multiple platforms made Java big page developers, or online newspaper editors, but I think they news and presented developers with a new and unique appli- do what the traditional developer did at the highest level: pro- cation development platform. In the beginning cross-platform vide people with information they need to get their job done meant that Java applications could run on several distinct or their life arranged. workstation-system platforms such as Windows, Macintosh, Developers need to understand that the network has not and UNIX. only changed the paradigm for building and running applica- In 1999, we announced that the Java platform would tions, it’s changing the developer paradigm too. In the world of J2EEextend itself upward J2ME into the enterprise server with the Java there are many implications. Who is a developer today? Is Enterprise Edition, and downward into the client-device space it only someone who can craft an EJB, or does it include a with the Micro Edition. With the release of J2EE in December servlet developer or even a JSP developer who’s “developing” a 1999, cross-platform began to get a new, vertical meaning Web page that’s fundamentally content? since compatibility extended now from the desktop to the For years developers built on the platform they targeted. server. This compatibility has formed the basis for J2EE’s Today, as the IT industry crosses the great divide from address- incredible success as the standard for networked-enterprise ing just traditional computers to addressing consumer elec- application development, especially in the application server tronics devices, it becomes impossible to develop to a single space. hardware platform. The consumer space makes the desktop Home Today, we’re starting to see yet another manifestation of look like the height of homogeneity. In the consumer electron- cross-platform as J2ME-enabled consumer electronics devices ics world there are dozens, if not hundreds, of different system come to market. Now Java spans vertically from the server to types and many of them are completely proprietary. With Java the desktop to the modern client.