In the beginning of this paper,we give pictures of the LinkedList. LinkedList LinkedList 1. The bottom implemention of LinkedList 双向循环链表 双向循环链表 LinkedList 底层是链表,故无容量不足的问题,(相比于arrary)2.The two important properties of LinkedList private transient Entryheader = new Entry(null, null, null); private transient int size = 0;header is the head of linkedlist,entry is 节点 object