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Java集合 - ConcurrentHashMap

介绍 ConcurrentHashMap技术是为了解决问题而生的，ConcurrentHashMap 解决了多个线程同时操作一个 HashMap 时，可能出现的内部问题。当多个线程同时操作一个 HashMap 时，有可能会出现多线程同时修改一个共享变量（HashMap 类的成员变量），导致数据被覆盖...

Java集合：ConcurrentHashMap详解

前言近期深入学习了ConcurrentHashMap，便整理成一篇博文记录一下，请注意：此博文针对的是JDK1.6，因此如果你看到的源码跟我文中的不同，则可能是由于版本不一样。ConcurrentHashMap的锁分段技术HashTable容器在竞争激烈的并发环境下表现出效率低下的原因，是因为所有访...

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Java集合---ConcurrentHashMap原理分析

原文：Java集合---ConcurrentHashMap原理分析集合是编程中最常用的数据结构。而谈到并发，几乎总是离不开集合这类高级数据结构的支持。比如两个线程需要同时访问一个中间临界区（Queue），比如常会用缓存作为外部文件的副本（HashMap）。这篇文章主要分析jdk1.5的3种并发集合...

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