Java Collection Tutorial - Java Vector.addAll(int index, Collection <? extends E > c)

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Syntax

Vector.addAll(int index, Collection <? extends E > c) has the following syntax.

public boolean addAll(int index,  Collection <? extends E> c)

Example

In the following code shows how to use Vector.addAll(int index, Collection <? extends E > c) method.

// w w w. jav a 2s . c  om

import java.util.Vector;

public class Main {
   public static void main(String[] args) {
      Vector<Integer>  firstvec = new Vector<Integer> (4);      
      Vector<Integer>  secondvec = new Vector<Integer> (4);
      
      // use add() method to add elements in the secondvec vector
      secondvec.add(5);
      secondvec.add(6);
      secondvec.add(7);
      secondvec.add(8);

      // use add() method to add elements in the firstvec vector
      firstvec.add(1);
      firstvec.add(2);
      firstvec.add(3);
      firstvec.add(4);
      
      /** use addAll() method to add elements of the 2nd vector at 
      1st element position of the first vector */
              
      firstvec.addAll(1,secondvec);

      System.out.println(firstvec);
                 
   } 
}

The code above generates the following result.

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