package corejava; import java.util.*; public class VectorDemo { public static void main(String[] args) { Vector vector = new Vector(); int primitiveType = 10; Integer wrapperType = new Integer(20); String str = "Ankit Kaushal"; 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()); } } }