Collections Data Structure Java

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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());
    }
    {
      Vector v = new Vector();
      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());
      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());
      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());
      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());
      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());
      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());
      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());
      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());
    }
  }
}