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