Java – Replace element in a LinkedList example

In the last post we shared a tutorial on searching an element in LinkedList. Here we are gonna see how to replace an existing element value with the new value in LinkedList using the index of the element.

Example

The method we used in the below program is:
public E set(int index, E element): Replaces the element at the specified position in this list with the specified element.

Complete code:

import java.util.LinkedList;
public class ReplaceInLinkedList {
 
 public static void main(String[] args) {
 
    // Create a LinkedList
    LinkedList<String> linkedlist = new LinkedList<String>();
 
    // Add elements to LinkedList
    linkedlist.add("Cobol");
    linkedlist.add("JCL");
    linkedlist.add("C++");
    linkedlist.add("C#");
    linkedlist.add("Java");
 
    // Displaying Elements before replace
    System.out.println("Before Replace:");
    for(String str: linkedlist){
       System.out.println(str);
    }
 
    // Replacing 3rd Element with new value
    linkedlist.set(2, "NEW VALUE");
    System.out.println("\n3rd Element Replaced \n");

    // Displaying Elements after replace
    System.out.println("After Replace:");
    for(String str2: linkedlist){
       System.out.println(str2);
    }
 }
}

Output:

Before Replace:
Cobol
JCL
C++
C#
Java

3rd Element Replaced 

After Replace:
Cobol
JCL
NEW VALUE
C#
Java