7 A. Write a java program to implement the vectors.

 Program :

import java.util.Vector;

class Pract7a

{

public static void main(String args[])

{

Vector<String> v=new Vector<String>();

v.add("Red");

v.add("Green");

v.add("Blue");

System.out.println("Vector Elements are:-"+v);

v.add(2,"Yellow");

System.out.println("After Adding Element at second position:-"+v);

System.out.println("Element at third position:-"+v.get(3));

System.out.println("First Element:-"+v.firstElement());

System.out.println("Last Element:-"+v.lastElement());

System.out.println("Is this vector empty?"+v.isEmpty());

}

}