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Java LinkedList void add(int index, Object o) method with Example

Java LinkedList void add(int index, Object o) method: Here, we are going to learn about the void add(int index, Object o) method of LinkedList class with its syntax and example.
Submitted by Preeti Jain, on June 16, 2019

LinkedList void add(int index, Object o) method

  • This method is available in package java.util.Collection and here, Collection is an interface.
  • In this method, the index is the position where we have to insert the element and Object is the element of the LinkedList.
  • This method is used to insert an object at the specified position in the linked list.
  • Index position starts from 0.

Syntax:

    void add(int index , Object o){
    }

Parameter(s):

We can pass two arguments as a parameter in the method and the object will add at the specified position of the linked list.

Return value:

The return type of this method is void that means this method returns nothing after execution.

Java program to demonstrate example of LinkedList add(int index, Object o) method

import java.util.LinkedList;

public class LinkList {
 public static void main(String[] args) {
  LinkedList list = new LinkedList();
  // use add() method to add few elements in the list 
  list.add(10);
  list.add(20);
  list.add(30);
  list.add(40);
  list.add(50);

  //  Current list Output
  System.out.println("The Current list is:" + list);

  // Add new elements at index 2 i.e. The position of 
  // newly inserted element is at the third position 
  // of the linked list and here index is 2 and index starts from 0  
  list.add(2, 25);

  //  New list Output 
  System.out.println("The new List is:" + list);
 }
}

Output

D:\Programs>javac LinkList.java

D:\Programs>java LinkList2
The Current list is:[10, 20, 30, 40, 50]
The new List is:[10, 20, 25, 30, 40, 50]





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