//java.util.Vector and java.util.Enumeration;

import java.util.*;
public class VectorDemo{
	public static void main(String[] args){
		Vector<Object> vector = new Vector<Object>();
		int primitiveType = 10;
		Integer wrapperType = new Integer(20);
		String str = "tapan joshi";
		vector.add(primitiveType);
		vector.add(wrapperType);
		vector.add(str);
		vector.add(2, new Integer(30));
		System.out.println("the elements of vector: " + vector);
		System.out.println("The size of vector are: " + vector.size());
		System.out.println("The elements at position 2 is: " + vector.elementAt(2));
		System.out.println("The first element of vector is: " + vector.firstElement());
		System.out.println("The last element of vector is: " + vector.lastElement());
		vector.removeElementAt(2);
		Enumeration e=vector.elements();
		System.out.println("The elements of vector: " + vector);
		while(e.hasMoreElements()){
			System.out.println("The elements are: " + e.nextElement());
		}	
	}
}