Copying and Cloning Vectors : Vector « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Vector

public Object clone()

Cloning a vector with clone() is like making a shallow copy of the vector.

A new vector is created with each object reference copied from the original vector.

Similar to calling the Vector constructor that accepts a Collection.

All elements of the two vectors will effectively point to the same set of objects.

import java.util.Collections;
import java.util.Vector;

public class MainClass {
  public static void main(String args[]) {
    Vector v1 = new Vector();
    v1.add("A");
    v1.add("C");
    v1.add("B");
    Vector v2 = (Vector) v1.clone();
    Collections.sort(v2);

    System.out.println(v1);
    System.out.println(v2);
  }
}

[A, C, B]
[A, B, C]