Java Example Programs – Basic Vector Operations In Java

Hi, in this post we will learn about the basic vector operations in Java. Normally we use vector when we don’t the size of an array and maybe the situation is like this that we have an array and it will increase it’s size when the program is running. In this case, we use vector So we can say that vector is similar to an ArrayList with two differences

Vector is synchronized
Vector has a lot of legacy method those methods are not in the collections framework.

In Sort and simple say: Vector implements dynamic array.

Here you can see some basic vector operations.

package com.practice.house;

import java.util.Vector;

/**
 *
 * @author marifurr
 */
public class JavaVector {

    public static void main(String[] args) {

        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());
    }
}

package com.practice.house;

import java.util.Vector;

/**

* @author marifurr

public class JavaVector {

public static void main(String[] args) {

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());

}

Sample Output:

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Md Arifur Rahman

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