《Java并发编程实战》这本书是Java开发者深入理解并发编程的重要参考书籍。本书旨在帮助程序员解决在多线程环境中遇到的实际问题,提升系统性能并保证其稳定性。随书源码提供了丰富的示例,让读者能够动手实践,加深对并发概念的理解。 并发编程是现代计算机科学中的核心主题,尤其是在Java这样的多线程语言中。Java提供的并发工具,如线程、同步机制、并发集合以及Executor框架,为开发高效、可靠的并发应用程序提供了强大的支持。以下是一些关键知识点: 1. **线程与进程**:线程是操作系统分配CPU时间的基本单位,而进程则包含了运行中的线程和其他资源。Java中的Thread类是创建和管理线程的基础。 2. **同步机制**:包括`synchronized`关键字、`volatile`变量、`Lock`接口(如ReentrantLock)等,它们用于保证共享数据的可见性和一致性,防止数据竞争。 3. **并发集合**:Java提供了一系列线程安全的集合,如`ConcurrentHashMap`、`CopyOnWriteArrayList`等,它们在多线程环境下提供了高效的操作。 4. **原子类**:`java.util.concurrent.atomic`包中的原子类,如`AtomicInteger`、`AtomicReference`等,提供了无锁的原子操作,可用于实现高效的并发控制。 5. **线程池**:`ExecutorService`和`ThreadPoolExecutor`允许开发者管理线程,有效控制并发数量,防止资源过度消耗。 6. **Future和Callable接口**:用于异步计算,Future表示一个未完成的任务结果,Callable用于定义可以返回结果的计算任务。 7. **并发设计模式**:如生产者-消费者模型、读写锁策略、双端队列等,这些都是解决并发问题的经典方法。 8. **线程通信**:`wait()`、`notify()`和`notifyAll()`方法是基于对象监视器的线程通信机制,而`java.util.concurrent`包中的`Condition`接口提供了更灵活的通信方式。 9. **死锁、活锁和饥饿**:这些是并发编程中常见的问题,了解它们的原理和避免策略至关重要。 10. **jcip-examples-src**:这个子文件夹可能包含了《Java并发编程实战》书中提到的各种示例代码,涵盖了上述知识点的实践应用。 通过学习和实践这些内容,开发者可以更好地理解和掌握Java并发编程,从而编写出高效、可扩展的多线程程序。对于想要提升并发编程技能的Java开发者来说,这本书和其随书源码是一个宝贵的资源。
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