Check for element existence in LinkedList example

In this example we shall show you how to check if an element exists in a LinkedList or not. To check an element existence in a LinkedList one should perform the following steps:

  • Create a new LinkedList.
  • Populate the list with elements, with add(E e) API method of LinkedList.
  • Check if an element exists in the list, with contains(Object o) API method of LinkedList. The method returns true if the list contains the specified element and false otherwise,

as described in the code snippet below.

package com.javacodegeeks.snippets.core;
import java.util.LinkedList;
public class ElementExistsLinkedList {
  public static void main(String[] args) {
    // Create a LinkedList and populate it with elements
    LinkedList linkedList = new LinkedList();
    // boolean contains(Object value) method returns true if the LinkedList contains the value, otherwise false.
    boolean exists = linkedList.contains("element_2");
    System.out.println("element_2 exists in LinkedList ? : " + exists);


element_2 exists in LinkedList ? : true

This was an example of how to check if an element exists in a LinkedList in Java.

Byron Kiourtzoglou

Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments
Back to top button