What Java Programmers should learn in 2023?
Here is my list of things a Java developer should learn in 2023, there is a good chance that you already know most of them but learning them better and doing deep dive doesn’t hurt:
Git and Github
Have been around some time, and while I have used Git in the past with Eclipse, I am yet to become comfortable with Git on the command line.
Why I haven’t mastered Git so far? Simply because I didn’t need it yet. I have occasionally downloaded projects from Github and run from Eclipse, but I am still a novice with Git.
Since now, most of the companies are migrating their projects from SVN, CVS to Git, it’s high time to learn and master Git.
2. Spring Framework 6.0
It’s been a couple of years since we had seen many significant upgrades to Spring and Java Ecosystem, and Spring Framework 6.0 is one of them. I have been hearing about some new features like the reactive programming model on Spring 5, the adoption of Java 17, some unit testing improvement, support for JPA Managed type etc. But I have yet to try that.
3. Docker and Kubernetes
You’ve probably heard the buzz around Docker and Kubernetes and the impact it has on DevOps teams. You may have at first thought, “ahh, yet another new technology I need to learn”, but I will say that Docker is not just another technology but it’s truly a game-changer.
Along with Kubernetes
It’s one of the most important tools that you can learn and will stay with you throughout your entire career.
Nowadays, Docker and Kubernetes are used by almost every development team, whether it’s a large enterprise or a small startup. It’s safe to say that if you’re entering the workforce now, you’ll most likely brush up against Docker at some point.
4. Unit testing (JUnit and Mockito)
Another area which I want to improve in the coming year. There are a lot of new frameworks and tools available for Java programmers to unit test, and integration tests their application, like Mockito and PowerMock for mocking objects, Robot Framework, and Cucumber for automated integration test and of course the new and shining JUnit 5 library.
There is plenty of stuff to learn on this front. If you can invest some time upgrading your unit testing skill, not only your coding expertise will improve, but also you will become a more professional developer, which every company looks from.
So, we have already covered 10 things Java developers should learn in 2023 but if you can add one more thing then I would suggest learning Microservice architecture. This is the architecture that goes hand-in-hand with cloud computing because it’s easier to deploy and sc
6. Apache Spark and Kafka
One more thing I want to keep exploring in-depth in 2023 is Big Data and mainly Apache Spark and Apache Kafka framework. I am not sure if I will get time to look at other Big data technologies, but it’s seriously good stuff, and Big Data is probably the hottest technology at this moment.