What is the LinkedList.get(int index) method in Java?

A linked list is a collection of linear data elements. Each element (node) contains data and reference parts. The data part has the value and the reference part has the address link to the next element.

The elements are not indexed, so random access like an array is not possible. Instead, we traverse from the beginning of the list and access the elements.

In Java, the LinkedList class is the doubly-linked listA kind of linked list. Each node contains three fields: two link fields (one for the previous element and another for the next element) and one data field. implementation of the List and Deque interfaces. The LinkedList class is present in the java.util package.

The get method

The get method can be used to get the element at the specified index of the LinkedList.

Syntax

public E get(int index);

Parameters

This method takes the index of the element to be retrieved as an argument.

Return value

This method returns the element at the specified index of the list.

The IndexOutOfBoundsException exception is thrown if the index is negative or greater than the list size (index < 0 || index >= size()).

Code

The code below demonstrates how to use the get method.

import java.util.LinkedList;
class LinkedListGetExample {
    public static void main( String args[] ) {
      LinkedList<String> list = new LinkedList<>();
      list.add("1");
      list.add("2");
      list.add("3");
      System.out.println("The list is " + list);
      
      System.out.println("The element at index 0 is " + list.get(0));
      System.out.println("The element at index 1 is " + list.get(1));
      System.out.println("The element at index 2 is " + list.get(2));
    }
}

Explanation

In the code above:

  • In line 1, we imported the LinkedList class.
import java.util.LinkedList;
  • In line 4, we created a LinkedList object with the name list.
LinkedList<String> list = new LinkedList<>();
  • From lines 5 to 7, we used the add method of the list object to add three elements ("1","2","3") to the list.
list.add("1");
list.add("2");
list.add("3");
  • In line 10, we used the get method of the list object to get the element at index 0.
list.get(0); // "1"
  • In line 11, we used the get method of the list object to get the element at index 1.
list.get(1); // "2"
  • In line 12, we used the get method of the list object to get the element at index 2.
list.get(2); // "3"

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