The Java.util.LinkedList.contains() method is used to check whether an element is present in a LinkedList or not. It takes the element as a parameter and returns True if the element is present in the list.
Syntax:
LinkedList.contains(Object element)
Parameters: The parameter element is of type LinkedList. This parameter refers to the element whose occurrence is needed to be checked in the list.
Return Value: The method returns True if the element is present in the LinkedList otherwise it returns False.
Below program illustrate the Java.util.LinkedList.contains() method:
Java
// Java code to illustrate boolean contains()import java.io.*;import java.util.LinkedList;public class LinkedListDemo { public static void main(String args[]) { // Creating an empty LinkedList LinkedList<String> list = new LinkedList<String>(); // Use add() method to add elements in the list list.add("Geeks"); list.add("for"); list.add("Geeks"); list.add("10"); list.add("20"); // Output the list System.out.println("LinkedList:" + list); // Check if the list contains "Hello" System.out.println("\nDoes the List contains 'Hello': " + list.contains("Hello")); // Check if the list contains "20" System.out.println("Does the List contains '20': " + list.contains("20")); // Check if the list contains "Geeks" System.out.println("Does the List contains 'Geeks': " + list.contains("Geeks")); }} |
Output:
LinkedList:[Geeks, for, Geeks, 10, 20] Does the List contains 'Hello': false Does the List contains '20': true Does the List contains 'Geeks': true
