Program: Basic Vector Operations.

Below example shows how to create vector object, adding elements to it, getting elements by specifying index, getting elements index, getting first element, getting last element, and is vector is empty or not.

package com.java2novice.vector;

import java.util.Vector;

public class BasicVectorOperations {

	public static void main(String a[]){
		Vector<String> vct = new Vector<String>();
		//adding elements to the end
		vct.add("First");
		vct.add("Second");
		vct.add("Third");
		System.out.println(vct);
		//adding element at specified index
		vct.add(2,"Random");
		System.out.println(vct);
		//getting elements by index
		System.out.println("Element at index 3 is: "+vct.get(3));
		//getting first element
		System.out.println("The first element of this vector is: "+vct.firstElement());
		//getting last element
		System.out.println("The last element of this vector is: "+vct.lastElement());
		//how to check vector is empty or not
		System.out.println("Is this vector empty? "+vct.isEmpty());
	}
}

[First, Second, Third]
[First, Second, Random, Third]
Element at index 3 is: Third
The first element of this vector is: First
The last element of this vector is: Third
Is this vector empty? false