You should learn multiple programming languages

The first language I used to write a small program was Pascal. Since then I have worked professionally with Java, JavaScript, Groovy and a few more. Currently, I am learning a bit of Go in my spare time. In this blog post, I want to encourage you to learn a new language as well and provide you with a few ideas. Continue reading “You should learn multiple programming languages”

Java for QA Automation engineers: how to learn?

First e4developer “guest blog post” brought to you by John Selawsky from https://medium.com/@johnythecoder

Last winter I got an unusual task from my management. I was assigned to organize training for a small group of manual testers so that the best of them could turn into QA Automation. Continue reading “Java for QA Automation engineers: how to learn?”

Which Java JDK should I use? Which provide free LTS?

With Oracle stopping free updates for Java 8 and effectively only maintaining free updates with the latest Java release (12 at the time of writing) a natural question arises… Which JDK should I use? This is a short article providing answers, depending on your circumstances. Continue reading “Which Java JDK should I use? Which provide free LTS?”

Java 9 to 12 – all the language modifications

We have all had quite a lot of time to get familiar with Java 8 and all the amazing features that it provided us with. Since then quite a lot have happened, with the release of Java 9, 10, 11 and this month 12 it is hard to stay on top of all the language changes happening! In here I will focus exclusively on the changes to the language leaving library changes to other writers. Continue reading “Java 9 to 12 – all the language modifications”

Reddit API Authentication with Java/Spring

I am a big fan of Reddit. The platform is great for learning and sharing programming knowledge… In fact, it contains so much knowledge and opinion, that there is no chance for any single person to analyze it all. Sounds like a job for a machine? Before we get started, we need to learn how to authenticate with the Reddit API. Continue reading “Reddit API Authentication with Java/Spring”

Java surprises – Unexpected behaviours and features

Java is a very mature programming language – in fact, it is over 21 years old, so if it was a person it could drink even in the USA! With age comes wisdom, but also with age comes quirkiness… at least sometimes. In this article, I will look at some of the more surprising and unexpected behavior and features of the language. Continue reading “Java surprises – Unexpected behaviours and features”

Single Responsibility Principle – do you know the real one?

Single Responsibility Principle, as defined in the very famous set of SOLID principles, is often misunderstood. When asked what it means, most developers go with- “a class should do only one thing”, or something along these lines. This is simplistic and frankly- wrong! Intrigued? Read on! Continue reading “Single Responsibility Principle – do you know the real one?”

Implementing Minimax Algorithm in Java

If you want to write a program that is able to play a strategy game, there are good chances that you will be looking at a Minimax algorithm. This is especially true when it comes to games like chess, where variations of the Minimax algorithm are what is used to build the strongest chess-playing programs in existence. In this article, I will look at implementing the basic version of the Minimax algorithm with Java. Continue reading “Implementing Minimax Algorithm in Java”

Please, stop writing so many “for loops” in Java!

In this blog post, I want to take you back to basics and talk about Java for loops. To be honest, I am writing this blog post partially for myself, as this is something that I am myself too often guilty of. Since Java 8, we don’t have to write so many for loops in Java! I hope this blog post will make your code nicer to read and quicker to write. Continue reading “Please, stop writing so many “for loops” in Java!”