LinkedList addFirst() Method in Java

Last Updated : 16 Dec, 2024

In Java, the addFirst() method of LinkedList, adds elements at the beginning of the list. All the existing elements moved one position to the right and the new element is placed at the beginning.

Syntax of LinkedList addFirst() Method

public void addFirst( E e)

Parameters:

E is the data type of elements in the list.
e is the element that need to be added at the beginning of the list.

Example: Here, we use the addFirst() method to add elements at the beginning of the list.

Java

// Java program to demonstrate  // addFirst() in a LinkedList import java.util.LinkedList;  public class Geeks {     public static void main(String args[]) {         LinkedList<String> l = new LinkedList<>();          // Use add() method to add           // elements in the list         l.add("Geeks");         l.add("for");         l.add("Geeks");          // Diplaying the present LinkedList         System.out.println("Before adding new elements: "                             + l);          // Adding new elements at the beginning         l.addFirst("Platform");         l.addFirst("Learning");          // Displaying the new LinkedList         System.out.println("After adding new elements: "                            + l);     } }

Output

Before adding new elements: [Geeks, for, Geeks] After adding new elements: [Learning, Platform, Geeks, for, Geeks]

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