Java LinkedList Tutorial

LinkedList in Java is a part of the Java Collections Framework and implements the List interface. It provides a doubly-linked list data structure that allows for efficient insertion, removal, and traversal operations, especially when operating near the head or tail of the list. Here, we’ll explore LinkedList through various examples to demonstrate its usage and benefits.

Basic Operations

Creating a LinkedList

Adding Elements

Elements can be added at the beginning, end, or any position within the list.

Removing Elements

Elements can be removed from the beginning, end, or a specific position.

Iterating Over a LinkedList

Using for-loop

Using for-each loop

Using Iterator

Other Useful Operations

Accessing Elements

Finding the Index of an Element

Converting to an Array

LinkedList vs. ArrayList

While LinkedList and ArrayList both implement the List interface, the choice between them depends on the specific needs of your application.

LinkedList is generally preferred when:

  • Frequent addition and removal of elements are required.
  • You predominantly work with elements at the beginning or end of the list.

In contrast, ArrayList may be more efficient for scenarios involving:

  • Frequent access to list elements by their index.
  • Less frequent addition/removal of elements.


LinkedList in Java offers a flexible and efficient way to manage dynamic lists, with easy insertion and removal operations. Understanding how to utilize LinkedList, along with its strengths and weaknesses compared to other list implementations like ArrayList, is crucial for Java developers in crafting efficient and effective applications.

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