What idea does the LinkedList class in Java implement?

LinkedList implements a doubly linked list.

• Each element (node) contains references to the previous and next elements in the sequence.
• It stores references to the first (head) and last (tail) elements of the list.
• It allows efficient insertion and removal of elements at the beginning, end, and middle of the list (O(1) with a node reference, O(n) with an index search).
• It is inefficient for random access by index (requires sequential traversal, O(n)).
• It implements List and Deque interfaces, allowing it to be used as a list, stack, or queue.