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Java并发手册:Java 7 Concurrency Cookbook源码解析

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下载需积分: 9 | 3.19MB | 更新于2025-03-26 | 116 浏览量 | 10 下载量 举报 收藏
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在IT行业中,Java 7 Concurrency Cookbook是一本专注于Java并发编程的实践指南。它为开发人员提供了一系列的“食谱”,涵盖了从基础到高级的并发任务处理方法。该书籍介绍的概念和技能可以帮助开发者编写出高效、线程安全的Java程序,从而提升软件性能和响应能力。对于那些希望深入了解Java并发机制的初学者和中级开发者来说,这是一本不可或缺的参考书籍。 ### 知识点详解 #### Java并发基础 并发编程是计算机科学中一个极其重要的领域,尤其在多核处理器日益普及的今天,掌握并发编程已成为一名合格软件工程师的基本要求。在Java中,并发编程主要通过Java.util.concurrent包(通常简称为JUC)实现,该包提供了大量用于多线程编程的工具类和接口。 在阅读《Java 7 Concurrency Cookbook》这本书之前,开发者应当具备一些基础知识,包括: 1. 理解线程的概念以及如何创建和管理线程。 2. 掌握Java中的同步机制,如synchronized关键字和volatile变量。 3. 了解基本的并发问题,比如死锁、竞态条件和线程安全问题。 4. 知道如何使用java.util.concurrent包中的基本工具,如Executor框架、CountDownLatch、CyclicBarrier、Semaphore等。 #### JUC组件深入应用 《Java 7 Concurrency Cookbook》详细介绍了JUC中各种组件的应用,帮助读者深入理解并发编程的高级特性。书中所涉及的知识点可能包括但不限于: 1. **锁的应用**:如何使用ReentrantLock、ReadWriteLock、StampedLock等高级锁实现复杂场景下的线程同步。 2. **原子变量**:借助AtomicInteger、AtomicLong、AtomicReference等原子类实现无锁的线程安全操作。 3. **线程池的使用**:详细介绍如何通过ExecutorService配置和管理线程池,以及合理分配任务给线程池。 4. **并发集合**:深入探讨ConcurrentHashMap、BlockingQueue、CopyOnWriteArrayList等并发集合的使用场景和优势。 5. **同步器工具**:讲解如何使用CountDownLatch、CyclicBarrier、Phaser等同步辅助工具。 6. **线程的高级特性**:涵盖线程的中断、线程状态、线程优先级等高级特性及其应用。 #### 实践性 本书不仅理论讲解到位,还非常重视实践。它鼓励读者动手运行书中的源码,以加深对并发编程概念的理解。读者可以通过实践了解到在不同并发场景下,各种并发工具和机制的实际表现和适用性。 ### 结语 通过《Java 7 Concurrency Cookbook》的学习,读者可以掌握如何在Java 7环境下编写高效且安全的并发代码,以及如何通过JUC提供的丰富工具来解决并发中的常见问题。尽管本书使用的是英文版本,但它的语言简单明了,即便是初学者也容易理解。书中所包含的源代码更是提供了很好的范例和练习机会,让读者能将理论与实践相结合,从而更深入地学习和掌握Java并发编程。对于希望提升自身并发编程能力的开发者而言,这本书无疑是一份宝贵的资源。

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When you work with a computer, you can do several things at once. You can hear music while you edit a document in a word processor and read your e-mail. This can be done because your operating system allows the concurrency of tasks. Concurrent programming is about the elements and mechanisms a platform offers to have multiple tasks or programs running at once and communicate with each other to exchange data or to synchronize with each other. Java is a concurrent platform and offers a lot of classes to execute concurrent tasks inside a Java program. With each version, Java increases the functionalities offered to programmers to facilitate the development of concurrent programs. This book covers the most important and useful mechanisms included in Version 7 of the Java concurrency API, so you will be able to use them directly in your applications, which are as follows: f f t e n . d u o l Basic thread management w.codec w w Thread synchronization mechanisms f f Thread creation and management delegation with executors f f Fork/Join framework to enhance the performance of your application f f Data structures for concurrent programs f f Adapting the default behavior of some concurrency classes to your needs f f Testing Java concurrency applications f f What this book covers Chapter 1, Thread Management will teach the readers how to make basic operations with threads. Creation, execution, and status management of the threads are explained through basic examples. Chapter 2, Basic Thread Synchronization will teach the readers to use the low-level Java mechanisms to synchronize a code. Locks and the synchronized keyword are explained in detail. Chapter 3, Thread Synchronization Utilities will teach the readers to use the high-level utilities of Java to manage the synchronization between the threads in Java. It includes an explanation of how to use the new Java 7 Phaser class to synchronize tasks divided into phases. Chapter 4, Thread Executors will teach the readers to delegate the thread management to executors. They allow running, managing, and getting the results of concurrent tasks. Chapter 5, Fork/Join Framework will teach the readers to use the new Java 7 Fork/Join framework. It’s a special kind of executor oriented to execute tasks that will be divided into smaller ones using the divide and conquer technique. Chapter 6, Concurrent Collections will teach the readers to how to use some concurrent data structures provided by the Java language. These data structures must be used in concurrent programs to avoid the use of synchronized blocks of code in their implementation. Chapter 7, Customizing Concurrency Classes will teach the readers how to adapt some of the most useful classes of the Java concurrency API to their needs. Chapter 8, Testing Concurrent Applications will teach the readers how to obtain information about the status of some of the most useful structures of the Java 7 concurrency API. The readers will also learn how to use some free tools to debug concurrent applications, such as the Eclipse, NetBeans IDE, or FindBugs applications to detect possible bugs on their applications.