# ConcurrentHashMap的实现原理与使用 ConcurrentHashMap是线程安全且高效的HashMap。本节让我们一起研究一下该容器是如何在保证线程安全的同时又能保证高效的操作。 ## 目录 * [为什么要使用ConcurrentHashMap](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/wei-shi-yao-yao-shi-yong-concurrenthashmap.md) * [ConcurrentHashMap的结构](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/concurrenthashmapde-jie-gou.md) * [ConcurrentHashMap的初始化](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/concurrenthashmapde-chu-shi-hua.md) * [定位Segment](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/ding-wei-segment.md) * [ConcurrentHashMap的操作](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/concurrenthashmapde-cao-zuo.md) * [ConcurrentHashMap讲解(一)](/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong/concurrenthashmapjiang-89e328-4e0029.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://tuonioooo-notebook.gitbook.io/java-concurrent/concurrenthashmapde-shi-xian-yuan-li-yu-shi-yong.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.