Copy all the elements of one Vector to another Vector example

In this example we will see how to copy all the elements of a Vector to another Vector. This process replaces the existing elements of the second vector with the corresponding element of first vector. For e.g. If we are copying vector v1 to vector v2 then first element of v2 will be replaced by first element of v1  and so on.

In the below code we have two vectors va & vb and we are copying all the elements of va to vb using Collections.copy() method.

Example:

import java.util.Collections;
import java.util.Vector;
public class VectorCopyExample {
  public static void main(String args[])
  { 
       //First Vector of String type
       Vector<String> va = new Vector<String>();
       //Adding elements to the first Vector
       va.add("AB");
       va.add("BC");
       va.add("CD");
       va.add("DE");

       //Second Vector
       Vector<String> vb = new Vector<String>();
       //Adding elements to the second Vector
       vb.add("1st");
       vb.add("2nd");
       vb.add("3rd");
       vb.add("4th");
       vb.add("5th");
       vb.add("6th");

       /*Displaying the elements of second vector before
         performing the copy operation*/
       System.out.println("Vector vb before copy: "+vb);

       //Copying all the elements of Vector va to Vector vb
       Collections.copy(vb, va);

       //Displaying elements after copy
       System.out.println("Vector vb after copy: "+vb);
   }
}

Output:

Vector vb before copy: [1st, 2nd, 3rd, 4th, 5th, 6th]
Vector vb after copy: [AB, BC, CD, DE, 5th, 6th]