The indexOf(E element) method of LinkedList returns the first occurrence of the specified element in this linked list.

Syntax

int indexOf(E e)

Parameter

e is the element to find in this linked-list

Return Value

It returns the index of the first occurrence of the specified element

Program

import java.util.LinkedList;

public class LinkedListIndexOfExample {

        public static void main(String[] args) {

                LinkedList oddNumbers = new LinkedList();
                oddNumbers.add(5);
                oddNumbers.add(7);
                oddNumbers.add(9);
                oddNumbers.add(11);

                System.out.println("Linked List elements: " + oddNumbers);
                System.out.println("Index of 7: " + oddNumbers.indexOf(7));

                System.out.println("Index of 11: " + oddNumbers.indexOf(11));

        }
}

Output

Linked List elements: [5, 7, 9, 11]
Index of 7: 1
Index of 11: 3