Java ArrayList Add (int index, E Element) example

Source: Internet
Author: User

Simple Add () method was used for adding a element at the end of the list however there is another variant of Add method wh Ich is used for adding a element to the specified index.

public void add(int index, Object element)

This method adds the element at the given index.

Example
   1:import java.util.ArrayList;
   2:publicclass Addmethodexample {
   3:     Public Static void Main (string[] args) {
   4:        //ArrayList of String type
   5:        New Arraylist<string> ();
   6:        //Simple Add () methods-adding elements at the end
   7:        al.add ("Hi");
   8:        al.add ("Hello");
   9:        al.add ("String");
  Ten:        al.add ("Test");
One   :        //adding element to the 4th position
  :        //4th position = 3 Index as index starts with 0
  :        al.add (3,"Howdy");
  14:
  :        System.out.println ("Elements after adding string Howdy:"+ al);
  :        //adding String to 1st position
  :        "Bye");
  18:
  :        //print
  :        System.out.println ("Elements after adding string bye:"+ al);
  :    }
  : }

Output:

Elements after adding string howdy:[hi, Hello, String, Howdy, test]elements after adding string bye:[bye, Hi, Hello, Strin G, Howdy, Test]

Java ArrayList Add (int index, E Element) example

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