addFirst and addLast methods in LinkedList

Apart from add(E e) and add(int index, E element) methods, we have addFirst and addLast methods in LinkedList to add elements.

1. addFirst(E e) – Inserts the specified element at the beginning of this list.

2. addLast(E e) – Appends the specified element to the end of this list.

Example : addFirst and addLast methods in LinkedList

package com.kscodes.collections.linkedList;

import java.util.LinkedList;

public class LinkedListAddFirstLast {

public static void main(String[] args) {

LinkedList<String> linkedList = new LinkedList<>();

// Use add(E e) to add elements

linkedList.add("Java");

linkedList.add("JSP");

linkedList.add("Spring MVC");

linkedList.add("Hibernate");

linkedList.add("Oracle");

System.out.println("We have a Linked List with Elements::"

+ linkedList.toString());

// Lets use addFirst(E e) to add element "Coding" at the beginning of

// the linkedList

linkedList.addFirst("Coding");

// Now Lets use addLast(E e) to add element "Programming" at the end of

// the linkedList

linkedList.addLast("Programming");

System.out.println("Now the Linked List has Elements::"

+ linkedList.toString());

}

1 2	We have a Linked List with Elements::[Java, JSP, Spring MVC, Hibernate, Oracle] Now the Linked List has Elements::[Coding, Java, JSP, Spring MVC, Hibernate, Oracle, Programming]