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.
