Search Element in the LinkedList

In the previous post, we have seen how to remove all elements from the List. In this post, we will see how to search Element in the LinkedList.

We can use the following methods for searching elements.

Syntax:

public int indexOf(Object o):  Returns the index of the first occurrence of the specified element in this list, or -1 if the element.

public int lastIndexOf(Object o): Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.

Example:

import java.util.LinkedList;

public class LinkedListEx {

	public static void main(String[] args) {
		LinkedList<String> fruits = new LinkedList<String>();
		fruits.add("Orange");
		fruits.add("Mango");
		fruits.add("Apple");
		fruits.add("Grapes");
		fruits.add("Mango");
		fruits.add("Banana");
		fruits.add("Grapes");
		fruits.add("Dates");
		
		System.out.println("Find out first occurrence of Mango :"+ fruits.indexOf("Mango")); 

		System.out.println("Find out last occurrence of Grapes :"+ fruits.lastIndexOf("Grapes"));  
	}
}

Output:

Find out first occurrence of Mango :1
Find out last occurrence of Grapes :6