JDK1.8 HashMap data structure diagram

 

When the number of elements in the linked list is greater than 8, if the length of the array is less than 64, the capacity will be expanded, and if the length of the array is greater than 64, it will be converted to a red-black tree.

 

 

 

 

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Origin blog.csdn.net/Anenan/article/details/114403928