How to use Vector in java.

 

package Program;
/**
 *
 * @author Dilip
 */
import java.util.Vector;
public class CreateVector {
public static void main(String args[]) {
    {
      Vector v = new Vector(0);
      System.out.println(v.capacity());
      v.addElement("Hello");
      System.out.println(v.capacity());
      v.addElement("Hello");
      System.out.println(v.capacity());
      v.addElement("Hello");
      System.out.println(v.capacity());
      v.addElement("Hello");
      System.out.println(v.capacity());
      v.addElement("Hello");
      System.out.println(v.capacity());
    }
    
  }
}
Output:
0
1
2
4
4
8