10 reasons to Learn Scala Programming Language

One of the questions my reader often ask me is, shall I learn Scala? Does Scala has better future than Java, or why Java developer should learn Scala and so on. Well, there can be many reasons for learning Scala e.g. you are forced to learn because it been used in the new company you joined or your solution architect decided to use it, but that's a different story. Here, we'll talk about reasons which encourage Java developers to learn Scala.  Scala has emerged as one the most powerful Java alternative in recent times. It's been the JVM language of choice, leaving Groovy and Clojure way behind, and preferred as the language people want to write most code in.

How to purchase a Spring Professional Certification Voucher Online?

So, you have been preparing for Spring certification for quite a sometime and now you feel you are ready to take the exam and it's time to buy the Spring certification voucher and schedule your exam. In this article, I'll show you how to buy the Spring certification voucher online. But, before purchasing a voucher, I would like to remind you that Spring certification voucher is only valid for 90 days, after that it will expire. So, it's best to buy the voucher only if you are ready for the exam i.e. you have gone through several Spring Mock tests and practice tests given in Spring study guides and you are consistently scoring over 80% on them.

Top 5 Free Data Structure and Algorithm Courses for Java and C Programmers

Data Structure and Algorithm is one of the essential topics for programmers, both to get a job and do well on Job. A good knowledge of data structure and algorithm is the foundation of writing good code. If you are familiar with essential data structures e.g. array, string, linked list, tree, map and advanced data structure e.g. tries, AVL trees etc and know when to use which data structure and compute the CPU and memory cost of your code in terms  Even though you don't need to write your own array, linked list or hashtable, given every major programming SKD provides them e.g. JDK or C++ STL library, you will need to understand them so that you can use them in right place. Using a right data structure can drastically improve the performance of an algorithm.

How Http Basic Authentication works in Spring Security?

In the last article, you have learned how to enable Http basic authentication in Spring security based Java application and now we'll go one step further to understand how exactly http basic authentication works in Spring security. If you remember, when you use HTTP Basic for authentication purpose the client e.g. browser or a rest client sends login credentials in http request header. The header is aptly named as "Authorization" and it contains based 64 encoded string which is created by concatenating username and password using a colon. For example, if the username is "johnsmith" and password is "JOHN3214" then they will be concatenated as "johnsmith:JOHN3214" before encoded using base 64 encoding algorithms.

What is a Functional interface in Java 8? @Functional Annotation and Examples

The functional interface is one of the most important concepts of Java 8 which actually powers lambda expression but many developers don't put enough effort to understand it and spend time learning lambda expression and Stream API without first understanding the role of functional interface in Java 8. Unless you know what is a functional interface and how lambda is related to it, you can't use powerful features of Java 8 e.g. lambda expression and stream API. Without knowledge of functional interface, you won't be able to understand where you can use a lambda in the code but also you will struggle to write lambda expression the method is expecting, hence, it's important to have a good understanding of functional interface in Java 8.

Top 5 Free Agile Courses for Programmers and Software Engineers

Technology is changing at a rapid pace and market conditions, tough competition, and time-to-market are some of the biggest concerns for today's organizations, especially for technology companies. In order to adapt this fast-changing environment, most of the companies are now using the Agile model of development, testing, and project management. This enables the organizations to efficiently cope with changes and deliver faster and that's why for a programmer or an IT professional, a solid knowledge of Agile methodologies and framework is important. It doesn't matter whether you know the Waterfall model of development or not but it does matter whether you have worked in an Agile environment or not. In order to educate programmers about Agile, I have shared some of the books to learn Agile in past and today I am going to share some of the free online Agile courses you can take to learn Agile methodologies at your own pace.