Shulou(Shulou.com)06/02 Report--

This issue of the content of the editor will bring you about how to carry out JDK source code analysis related to LinkedHashMap, the article is rich in content and professional analysis and description for you, after reading this article, I hope you can get something.

LinkedHashMap is essentially HashMap+LinkedList and provides the function of sequential access.

First, the overall structure 1. Define public class LinkedHashMap extends HashMap implements Map {}

We can also see from the above definition that LinkedHashMap inherits HashMap and adds two-way linked list recording order. The code and structure itself are not difficult, but the organization of the structure and code reuse are worth learning. The specific structure is shown in the figure:

two。 Constructor and member variable public LinkedHashMap (int initialCapacity, float loadFactor) {} public LinkedHashMap (int initialCapacity) {} public LinkedHashMap () {} public LinkedHashMap (Map)

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