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About Byron Kiourtzoglou

Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Replace element LinkedList example

In this example we shall show you how to replace an element in a LinkedList, that is setting another element in the index of that element. To replace an element in a LinkedList one should perform the following steps:

  • Create a new LinkedList.
  • Populate the list with elements, with the add(E e) API method of the LinkedLink.
  • Invoke the set(int index, E element) API method of the LinkedList. It replaces the element at the specified index of the LinkedList with the one provided. It returns the replaced element,

as described in the code snippet below.

package com.javacodegeeks.snippets.core;

import java.util.LinkedList;
 
public class ReplaceElementLinkedList {
 
  public static void main(String[] args) {
 
    // Create a LinkedList and populate it with elements
    LinkedList linkedList = new LinkedList();
    linkedList.add("element_1");
    linkedList.add("element_2");
    linkedList.add("element_3");
    linkedList.add("element_4");
    linkedList.add("element_5");
 
    System.out.println("LinkedList contains : " + linkedList);
 
    /*
     * Object set(int index, Object element) method replaces the element 
     * found at the specified index in the LinkedList with the one provided 
     * and returns the replaced element
     */
     linkedList.set(3, "element_6");
     System.out.println("LinkedList contains : " + linkedList);
  }
}

Output:

LinkedList contains : [element_1, element_2, element_3, element_4, element_5]
LinkedList contains : [element_1, element_2, element_3, element_6, element_5]

 
This was an example of how to replace an element in a LinkedList in Java.

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