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1．HashMap VS HashTable1.1.首先说下 HashMap 的原理。HashMap 的数据结构/**The table, resized as necessary. Length MUST Always be a power of two.**/transient Entry[] table;static class Entry<K,V> imple...

一、概述先来看看源码中的这一段注释，我们先尝试从中提取一些信息：Doubly-linked list implementation of the List and Deque interfaces. Implements all optional list operations, and permits all elements (including null).All of the oper...

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