In Java, a linked list is a data structure that consists of a sequence of nodes, where each node contains data and a reference to the next node in the list. Unlike arrays, linked lists do not require contiguous memory allocation.
The first node in a linked list is called the head, and the last node is called the tail. Each node contains a data element and a reference (or pointer) to the next node. The reference to the next node allows traversal through the list, starting from the head and following the references until reaching the tail.
Linked lists provide dynamic memory allocation, efficient insertion and deletion operations, and flexibility in size. However, they have slower access times compared to arrays since sequential traversal is necessary to access a specific element.
Java provides a built-in LinkedList class in the java.util package that implements the linked list data structure. It provides various methods for adding, removing, and accessing elements in the list.
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