Great CD-ROM! Trialware: IBM VisualAge® for Java, IBM DB2® Universal Database V.5, Lotus Domino® Go Web Server, ModelWorks SitePad Pro® professional Java/HTML/VRML IDE, plus free MindQ® Java training, Sun's JDK® 1.1.6, and all the book's source code!

Java and network computing promise lower costs, greater efficiency, easier management, and support for revolutionary new applications. In this book, an IBM team of Java experts shows you how to deliver on those promises - right now.

You'll start by gaining an in-depth understanding of the network computing paradigm. Then, you'll walk step-by-step through designing, developing, and implementing thin-client Java applications for any environment: intranet or Internet, LAN-based or enterprise-wide.

Review each key mechanism for building distributed Java applications, including HTTP, RMI, sockets, Java servlets, and JDBC. Discover advanced techniques for optimizing thin-client code; and watch Java at work in IBM SmartCard and X-10 home control applications. Finally, learn exactly how to deploy distributed Java applications on IBM's new Network Station 1000.

Network computing has arrived - and Java Thin-Client Programming for a Network Computing Environment is all you need to make the most of it.

Sharing Technical Expertise from Around the World.

This book and other IBM Redbooks are products of IBM's International Technical Support Organization, where worldwide specialists work alongside you to harness IBM technologies. IBM Redbooks make the answers to your most pressing technical questions easily and immediately accessible.

For more information: http://www.redbooks.ibm.com/redbooks.

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Sample Content

Downloadable Sample Chapter

Click here for a sample chapter for this book: 0130111171.pdf

Figures.

Tables.

Preface.

The Team That Wrote This Book. Comments Welcome.

1. Introduction.

A Thin Client Application-The Lunar Medical Center Story. About the Book. Structure of the Book. Who Should Read This Book. Assumptions. How to Use This Book.

2. Network Computing and Network Computers.

What is Network Computing? Problems with Network Computing. The Network Computer (NC). A Network Computing Strategy.

3. Distributed Applications.

The Monolithic, Nondistributed Alternative. A Look at Some Issues. Considering Distributed Systems Design & Development Strategies. In Summary.

4. HTML-Based Clients.

Browsers and Web Servers. HTML Overview. Client Intelligence-JavaScript.

5. Java-Based Clients.

A Brief Overview of Java. Client-Server Computing with Java. The Lunar Medical Center's Java Application. The Lunar Medical Center's Java Applet. Some Java Facilities Supporting Enterprise-Wide Network Computing. In Summary.

6. Design Decisions.

Designing the Object Model for the Lunar Medical Center's Systems. Designing the Applications: Considering Alternatives. The Lunar Medical Center Implementations. In Summary.

7. Java Servlets and HTTP Communication.

Overview of the Hypertext Transfer Protocol and Request Methods. Common Gateway Interface. Java Servlets.

8. Java Servers Using JDBC.

Overview of JDBC. Using JDBC. The LMC's JDBC Implementation.

9. Java Servers and Socket Communication.

Introduction to TCP/IP sockets. Sockets with Java. The LMC's Socket Implementation. In Summary.

10. Java Servers and RMI Communication.

RMI: An Easy Way to Implement Java Client/Server Applications. The RMI Architecture. RMI from a Programmer's Perspective. The LMC's RMI Implementation. In Summary.

11. Client Diets.

Looking at the Options. In Summary.

12. Tasty Additions.

Introduction to SmartCards. Sample SmartCard Application. Accessing a Serial Port.

13. NC Deployment: Using IBM Network Stations.

Introduction. Software Requirements. The Initialization Process. IBM Network Station Set Up. The IBM Network Station Manager. The Configuration Files. The Startup Files. The IBM Network Station User Services. The IBM Network Station Message Log. Accessing the Serial Port. Coming Soon: IBM Software Release 3.

14. Java in the IBM Network Station.

Introduction. Java Virtual Machine. Memory Requirements. Java Settings. Running Java Programs in the IBM Network Station. Troubleshooting Java Execution Problems. The eSuite.

Appendix A: Brief HTML Reference.

Top Level Tags. Character Formatting Tags. Block Formatting Tags. Table Tags. List Tags. Forms Tags. Miscellaneous Tags.

Appendix B: Java Development: Using VisualAge for Java.

The VisualAge Family. VisualAge for Java Overview. Integrated Development Environment (IDE). Enterprise Access Builders (EAB). System Requirements. Summary.

Appendix C: Special Notices.

Appendix D: Related Publications.

International Technical Support Organization Publications. Redbooks on CD-ROMs. Other Publications.

How To Get ITSO Redbooks.

How IBM Employees Can Get ITSO Redbooks. How Customers Can Get ITSO Redbooks. IBM Redbook Order Form.

List of Abbreviations.

Index.

ITSO Redbook Evaluation.

Preface

Preface

In an astonishingly short period of time, Java has emerged as a major force in the computing landscape, both as a programming language for the '90s and as a new platform for the development of heterogeneous network-centric systems. Along with the rise of Java has come the idea of network computing. This redbook looks at these two major forces by positioning network computing within the enterprise and showing how Java can be used to build sophisticated applications in the network computing arena. Using a scenario centered around the Lunar Medical Center, this redbook shows how to design and develop Java-based applications, applets and complete systems and highlights many of the related issues and alternatives that must be examined before an organization can feel "safe" with the new technologies. Developing applications with Version 1.0 of IBM's versatile VisualAge for Java Integrated Development Environment is the focus of this redbook. It will help you install, tailor and configure the new IBM Network Station 1000 to run Java-based applications and applets and show you how to work with the new Lotus eSuite Java-based application on the Network Station.

The Team That Wrote This Book
This redbook was produced by a team of specialists from around the world working at the International Technical Support Organization, Austin Center.

Figure 0P1 The Jalape-o Team Shown above: the team that worked on this book. Clockwise from top-left: Gerardo Bazalar (Peru), Bob Brown (Australia), JŸrgen Friedrichs (Germany), Burkhard Volkemer (Germany), Jose Swanepoel (France), Henri Jubin (France) and Dennis Remmer (Australia). JŸrgen Friedrichs is a project leader in the OO/AD group at the International Technical Support Organization (ITSO), Austin Center. Before joining the ITSO in 1997, Juergen worked in Technical Marketing Support for OS/2, Warp Server and TCP/IP in Germany. Henri Jubin is currently working for the International Technical Support Organization (ITSO) in Austin, where he covers the area of Object Oriented Technology. Henri has previously worked in various support and consulting positions within IBM France. He has dealt with topics such as Object Oriented Technology and OS/2.

The Jalapeno Team:
Bob Brown is a Principal Consultant with the Distributed Systems Technology Centre (DSTC), based in Brisbane, Australia. He has been associated with computers in various ways for 14 years. He has worked as a computing researcher in the United Kingdom and as a lecturer in computing throughout Asia. At the DSTC, Bob works on controlling technology transfer from the centre to industry and is the manager controlling DSTC's relationship with IBM. Bob's varied activities also include managing nodes on the Australia-wide Asynchronous Transfer Mode-based Experimental Broadband Network and presenting workshops on Java.
Dennis Remmer is a Principal Consultant with the Distributed Systems Technology Centre (DSTC), based in Brisbane, Australia. He has over seven years of experience in systems design, implementation and integration in the areas of databases, geospatial information systems (GIS) and network computing. He holds degrees in Computer Science and GIS from the University of Queensland. Dennis has previously worked at Unisys Corporation and ARC Systems, an Australian GIS company. His role with the DSTC encompasses consultancy, software development, course development, and instruction in network computing and distributed system technologies.
Gerardo Bazalar is an IT Specialist in IBM of Peru. He has one year of experience in electronic and network computing business. He holds a degree in Information Engineering from the Catholic University of Peru. He is also a professor in that university in the Compilers and Interpreters area. His areas of expertise include software development, consultancy and emergent technologies.
Burkhard Volkemer is a consultant for the IBM Global Services at the department for telecommunication and media in Frankfurt/Germany. Before joining IBM in 1996, he was working at the European center for particle physics (CERN) in Geneva/Switzerland, where he earned his Ph.D. in physics. In IBM Global Services, Dr. Volkemer has been working on the analysis and design of telecommunication applications and their implementation.
Jose Swaenepoel is a AS/400 System Engineer in France. He has worked with customers and Business Partners since 1988. His skill areas include Application Development, Performance tuning and communications. In January 1998 he joined the IBM EMEA West Region AS/400 Java team. He has previously written a book intended to Business Partners on Communication APIs.

Thanks to the following people for their invaluable contributions to this project:
Bob Maatta is a Senior Software Engineer from the United States at the International Technical Support Organization, Rochester Center. He writes extensively and teaches IBM classes worldwide on all areas of AS/400 client/server. Before joining the ITSO three years ago, he worked in the U.S. AS/400 National Technical Support Center as a Consulting Market Support Specialist. He has over 20 years of experience in the computer field and has worked with all aspects of personal computers for the last 10 years. Brian White Eagle is a software engineer in the Network Computer Division's Advanced Solutions Center from Austin, TX. His current responsibilities include hardware and software enablement on the Network Station, which includes smart cards on the Network Station 1000 using the OpenCard Framework. He is a recent graduate from the Massachusetts Institute of Technology with a Bachelor of Science in Computer Science and Electrical Engineering.
Sandeep Singhal is a Research Staff Member with IBM's T.J. Watson Research Center. Dr. Singhal's research focuses on network protocol design and implementation for enabling high-performance applications such as distributed multimedia, simulation, and virtual environments in heterogeneous network and computing environments. His other interests include large-scale software engineering and object-oriented design. His current work addresses issues facing the implementation of client/server applications for "pervasive computing" devices. His previous networking research has been adopted in the "Tom Clancey's Politika" video game shipped by Red Storm Entertainment and in the DoD military simulation High-Level Architecture. Dr. Singhal has served on DARPA Technical Advisory Boards and National Research Council efforts to define the modeling and simulation research agenda for the 21st century, Singhal earned his Ph.D in Computer Science from Stanford University in 1996 and an M.S. in 1994. He earned a B.S. in Computer Science, B.S. in Mathematical Sciences, and a B.A. in Mathematics from Johns Hopkins University in 1992.
Chris Ritchie is a technical consultant for the Network Computer Division Advanced Solution Center (ASC) in Austin, Texas. He has worked for IBM for 14 years and has experience in high performance graphics device driver development, X Windows Server development, Xlib protocol transport mechanisms, Microsoft Windows NT graphics device drivers, MPEG hardware and software technology, Java integration support, and thin client architecture. He is currently a member of the ASC SWAT team responsible for pre-sales customer support and solution development.
Donna Van Fleet, Rebecca Austen, Lauren Kingman, Paul Buck, RG Keen
Comments Welcome
Your comments are important to us!
We want our redbooks to be as helpful as possible. Please send us your comments about this or other redbooks in one of the following ways:
Fax the evaluation form found in "ITSO Redbook Evaluation" on page 333 to the fax number shown on the form.
Use the electronic evaluation form found on the Redbooks Web sites:
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Send us a note at the following address: redbook@us.ibm.com

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