Is vector empty

import java.util.Arrays;
import java.util.Enumeration;
import java.util.Vector;

public class Main{

  public static void main(String args[]) {

    Vector v = new Vector();

    v.add("java2s.com 1");
    v.add("java2s.com 2");
    v.add("java2s.com 3");
    System.out.println(v.isEmpty());
  }
}