Java Spaces Example by Example (Paperback)

Steven L. Halter

  • 出版商: Prentice Hall
  • 出版日期: 2001-12-15
  • 售價: $1,380
  • 貴賓價: 9.5$1,311
  • 語言: 英文
  • 頁數: 400
  • 裝訂: Paperback
  • ISBN: 0130619167
  • ISBN-13: 9780130619167
  • 相關分類: Java 程式語言





  • The hands-on, example-rich guide to JavaSpaces technology
  • Building robust, scalable, high-performance distributed applications
  • Up-to-the-minute coverage based on Jini 1.1 network technology and JDK 1.4 software
  • Practical solutions to the most common challenges of distributed development

The example-rich guide to JavaSpaces technology: building more robust, scalable, and secure distributed applications for working developers!

JavaSpaces technology simplifies distributed computing, by providing a shared virtual space where tasks, requests, and information can easily be exchanged in the form of objects based on Javatm technology. JavaSpaces Example by Example offers an example-rich introduction to JavaSpaces architecture and its Jini network technology-based interfaces. Using this book's extensive examples and projects, experienced developers can begin building applications using the JavaSpaces specification almost immediately—and quickly master advanced techniques for enhancing security, performance, and scalability.

Steven L. Halter begins by introducing JavaSpaces technology: its goals, advantages, applications, and current capabilities. He walks you through obtaining, installing, and configuring JavaSpaces architecture, addressing common problems such as authorization configuration and improper codebase settings. Next, he introduces the fundamental concepts of development, including entries, leasing, events, transactions, and persistence.

You'll learn powerful distributed programming techniques, including the effective use of data structures and collections; and better ways to improve performance, prevent deadlock, and take full advantage of parallelism. Halter provides in-depth coverage of scalability and availability, concluding with detailed guidance on using security features based on Java 2 technology to protect distributed JavaSpaces applications.

Extensive code examples illustrate:

  • Leasing and events
  • Transactions and persistence
  • Jini technology interfaces
  • Performance optimization
  • Data structures
  • Collections
  • Preventing deadlock
  • Maximizing parallelism
  • Distributed application security
  • Improving scalability

Table of Contents



1. About JavaSpaces.

What Is a JavaSpace? JavaSpace Interface. Jini and JavaSpaces. Shared Distributed Computing. Persistent Object Repository. Uses of JavaSpaces. Information Sharing. Compute Serving. Work Flow. What's Next.

2. Obtaining and Installing JavaSpaces.

Getting Java Installed. Getting and Installing Jini. Sun Community Source License (SCSL). Getting Jini. Installing Jini. Getting a JavaSpace Running. Starting the Supporting Services. Starting with the GUI. Starting from the Command Line. Running the Ray-Tracing Example. What's Next.

3. JavaSpaces Basics.

Coding Conventions. Finding a JavaSpace. Compiling. Running the Services. Running the Example. Entries. Writing an Entry. Compiling. Running the Example. Reading an Entry. Entry Templates. Compiling. Running the Example. Taking an Entry. Compiling. Running the Example. The Snapshot Method. What's Next.

4. More JavaSpaces.

Leasing. Using Leases with JavaSpaces. Compiling. Running the Example. Using Transactions with JavaSpaces. Creating a Transaction. Transactions and JavaSpace Methods. Using Transactions with JavaSpaces. Distributed Events. Distributed Events and JavaSpaces. Event Example. Persistence. What's Next.


5. Encouraging Distribution.

Distributed Concepts. Parallelism. Partial Failure. Communication/Synchronization. Distributed Structures. Arrays. Compiling. Running the Example. Queues. Unordered Structures. What's Next.

6. Synchronization Issues.

Types of Synchronization Problems. Data Corruption. Deadlock Problems. Starvation Problems7. Synchronization Methodologies. Basic JavaSpace Mechanisms. Space Initialization. Semaphores. The Music Store Example. Compiling. To compile the classes for the synchronization example in Windows, use the following. What's Next.

7. Fairly Sharing Resources.

Sharing Fairly. Order-Processing Example. Item Viewer. Compiling. Running the Example. What's Next.


8. Parallel Computing.

Parallel Computing in General. Splitting Tasks up. Piecing Together the Results. A Parallel Computing Framework. A Prime Number Counter Application. Compiling. Running the Example. Scaling Further. Scaling Further Still. What's Next.

9. Security Issues.

Security in General. Security Model. RMID Security. Policy Files. Service Policies. Client Policy Files. Signing Files. JavaSpaces Security.

10. Wrapping It up.

Useful Places for Information. Web Sites. Mailing Lists. Other Technologies of Interest.