Adding Another Collection : Vector « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Vector

public boolean addAll(Collection c)
public boolean addAll(int index, Collection c)

import java.util.Vector;

public class MainClass {
  public static void main(String args[]) {
    Vector v = new Vector(5);
    for (int i = 0; i < 10; i++) {
      v.insertElementAt(i,0);
    }
    System.out.println(v);
    
    Vector v2 = new Vector();
    v2.addAll(v);
    v2.addAll(v);
    
    System.out.println(v2);
  }
}

[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]
[9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]