Why Checked Exception exists in Java when we have Runtime Exception in our bucket?

Have you ever thought Why Checked Exception exists in Java when we have Runtime Exception to convey exceptional cases in our program? There must be a pretty good reason behind it? Have you ever tried to find it out?

Today we would provide you a small overview about Checked Exception then we directly jump on answering our topic of interest today i.e. Why Checked Exception exists in Java?

How to Fix the FeedBurner Email Subcription Error: The publisher has deactivated subscriptions by email

Have you came across below error while trying to subscribe any website or blog using your email address:
 

The errors state that : The publisher has deactivated subscriptions by email and  The feed does not have subscriptions by email enabled.

These error messages tells us two thing about the website or a blog which we are trying to subscribe:

• The website or blog is using Google's free service i.e. FeedBurner service for their web feed management (i.e. feed subscription)
• The owner of the website or a blog previously allowed feed subscription by email but now  they have deactivated this service

In this article, I would show you the steps with screenshots to fix the above FeedBurner Email Subscription Error.

Introducing Vagrant

Have you ever faced or heard about below problems:

• Environment setup on multiple systems whether it is development, staging or QA which includes multiple server setup, software and database installation as well as their configuration. We all agree on one point that traditional way of Environment setup is very time consuming and effort taking.
• The process/scripts for setting up the server / database / software that worked in one system are now failing in another. I am referring to “it does not work on my machine” excuse that developers used to raise for any kind of issues. :-)
• New member joins the team - you have to again setup the same development environment; you have to recall the complete setup process. Even if you are happy and ready to set up the development environment in traditional way, if it is not properly documented and you miss a minor thing then boom...red flag!  
• Unable to replicate the issues in your local development environment that's happening in production or in other team members workstation

If yes, then this article/tutorial is a must for you. Vagrant addresses these problems and helps us to create and manage portable, reproducible development environment. If you haven’t faced or heard about above problems or Vagrant, then this is the right time to get acquainted to it. Vagrant is very popular open source project.

In this article, we would discuss:
What is Vagrant?
Why do we need Vagrant?
What are the main features offered by Vagrant?

VirtualBox Overview

Have you ever faced problem in understanding or confused about the terms like VirtualBox ,Virtual Machine. If yes, then this article would clarify all your doubts. Today we would discuss below topics:

What is VirtualBox?
Why one should use VirtualBox?