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LinkedList set() Method in Java
  • Last Updated : 10 Dec, 2018

The Java.util.LinkedList.set() method is used to replace any particular element in the linked list created using the LinkedList class with another element. This can be done by specifying the position of the element to be replaced and the new element in the parameter of the set() method.

Syntax:

LinkedList.set(int index, Object element)

Parameters: This function accepts two parameters as shown in the above syntax and described below.

  • index: This is of integer type and refers to the position of the element that is to be replaced from the linked list.
  • element: It is the new element by which the existing element will be replaced and is of the same object type as the linked list.

Return Value: The method returns the previous value from the linked list that is replaced with the new value.

Below program illustrate the Java.util.LinkedList.set() method:

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// Java code to illustrate set()
import java.io.*;
import java.util.LinkedList;
  
public class LinkedListDemo {
    public static void main(String args[])
    {
        // Creating an empty LinkedList
        LinkedList<String> list = new LinkedList<String>();
  
        // Use add() method to add elements in the list
        list.add("Geeks");
        list.add("for");
        list.add("Geeks");
        list.add("10");
        list.add("20");
  
        // Displaying the linkedlist
        System.out.println("LinkedList:" + list);
          
        // Using set() method to replace Geeks with GFG
        System.out.println("The Object that is replaced is: " + list.set(2, "GFG"));
          
        // Using set() method to replace 20 with 50
        System.out.println("The Object that is replaced is: " + list.set(4, "50"));
          
        // Displaying the modified linkedlist
        System.out.println("The new LinkedList is:" + list);
    }
}

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Output:

LinkedList:[Geeks, for, Geeks, 10, 20]
The Object that is replaced is: Geeks
The Object that is replaced is: 20
The new LinkedList is:[Geeks, for, GFG, 10, 50]

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