Program to store various types of objects in Vector

/* Program to store various types of objects in Vector */

import java.util.*;

class Person
{
    String FirstName = new String();
    String LastName = new String();

    Person(String Fname, String Lname)
    {
        FirstName = Fname;   
        LastName = Lname;
    }

    public String toString()
    {
        return ""+FirstName+" "+LastName;
    }
}
       
class P32
{
    public static void main(String args[ ])
    {
        // initial size is 4, increment is 2
        Vector v = new Vector(4,2);

        System.out.println("Initial size : "+v.size());
        System.out.println("Initial Capacity : "+v.capacity());

        v.addElement(new Integer(1));
        v.addElement(new Integer(2));

        v.addElement(new Float(5.25));
       
        Person p1 = new Person("Mahatma","Gandhi");
        v.addElement(p1);

        v.addElement(new Double(20.53));

        Person p2 = new Person("Abdul","Kalam");
        v.addElement(p2);

        v.addElement(new Integer(3));


        System.out.println("\nFirst element :"+(Integer)v.firstElement());
        System.out.println("Last element :"+(Integer)v.lastElement());


        //****** Enumerate the elements in the Vector *********
        Enumeration vEnum = v.elements();

         System.out.println("\nElements in vector :");
        while(vEnum.hasMoreElements())
            System.out.println(vEnum.nextElement() +"   ");
        System.out.println();
    }
}