10 things for Java programmers to learn in 2022

Here is my list of things a Java developer should learn in 2022, there's a good chance you already know most of them but it doesn't hurt to learn them better and dive deeper:

1. Spring Framework 5+

It's been a few years since we've seen several significant upgrades to the Spring and Java ecosystem, and Spring Framework 5.0 is one of them. I am hearing about some new features like the reactive programming model on Spring 5, the adoption of Java 8 and 9, some unit testing improvements, etc. But I haven't tried it yet.

Anyway, I have already started learning Spring 5.0 by following Spring 5.0. 0: Beginning with Guru and will continue the momentum in 2022. If you use Spring, maybe this is the best time to learn Spring 5.0.

Read more: A DIVE INTO THE FULL STACK! THIS IS HOW YOU CAN EXPERTISE IN FULL-STACK DEVELOPMENT!

2. Git

Git and Github have been around for a while, and while I've used Git with Eclipse in the past, I've yet to be comfortable with Git on the command line.

Why haven't I mastered Git yet? Just because I didn't need it right now. I've occasionally downloaded projects from Github and run from Eclipse, but I'm still a newbie with Git.

From now on, most companies are shifting their projects from SVN, and CVS to Git, it's high time to learn and master Git.

I recently purchased Git Complete: The Definitive, Step-by-Step Guide to Git from Udemy on their last $10 sale, and it will be the first item to be completed in 2022. If you're in the same boat and want to learn Git in 2022, check out that course from Udemy, it's convenient.

3. Unit Testing (JUnit and Mockito)

Another area that I want to improve in the coming year. There are lots of new frameworks and tools available for Java programmers to unit test, and integrate test their applications, such as Mockito and PowerMock for mocking objects, Robot Framework, and Cucumber for automated integration testing, and of course New and shiny JUnit 5 library.

There is much to learn on this front. If you can take some time to upgrade your unit testing skills, not only will your coding expertise improve, but you will also become a more professional developer that every company looks up to. To start, you can check out the JUnit and Mockito Crash Course from Udemy.

4. New Java Features from JDK 9 to 17. As far as

As I've said in the past, I'm still struggling to catch up with the six-monthly Java release and many Java developers. I've spent some time this year learning the new features of Java 9, 10, 11, and 12, but for me, Java 11 is still a priority until I move to Java 13, which is an LTS release.

JDK 9 brings a lot of goodies in terms of collection factory methods like modules, Jigsaw, Reactive Streams, Process API, HTTP2 client, JShell, and API improvements, and I'm really looking forward to learning them as soon as possible.

Similarly, JDK 10 brings var to give you a taste of dynamic typing and some GC improvements. Then you have text blocks and strings in the switch case from JDK 12 and JDK 13.

5. Docker and Kubernetes

You've probably heard the discussion about Docker and Kubernetes and their impact on DevOps teams. You might have thought at first, "Ah, I need to learn another new technology", but I would say that Docker is not just another technology but it really is a game-changer.

With Kubernetes, it is one of the most important tools you can learn and will be with you throughout your career.

Nowadays, Docker and Kubernetes are used by almost every development team, be it a large enterprise or a small startup. It's safe to say that if you're just entering the workforce, you'll probably brush up against Docker at some point.

In short, whether you are a junior Java developer or a seasoned veteran of many years, knowledge of Docker and Kubernetes is essential for your career progression and job change. If you have already realized the importance of Kubernetes and want to learn Kubernetes in 2022 then Docker and Kubernetes.

Read more: full-stack development for modern business

6. DevOps (Jenkins)

This is another area where I'm seeing a lot of traction over the past year as more and more companies are moving to DevOps and adopting continuous integration and deployment.

DevOps is very vast, and you need to learn a lot of tools and principles, and the same thing affects many developers, but you need not worry. I have shared a DevOps RoadMap which you can follow to learn and master DevOps, especially Jenkins, at your own pace.

This means that if you are an experienced Java programmer with a passion for managing the environment, and automating and improving the overall structure, you can become a DevOps engineer.

If you are looking for some excellent resources, Jenkins, From Zero to Hero: Being a DevOps Jenkins Master is a great course to start with, especially for Java developers.

7. RESTful Web Service

Another thing I want to improve in 2022 is my knowledge of writing REST APIs and implementing secure and scalable RESTful web services and cloud-native microservices in Java using Spring.

This is a skill that is highly desirable in the Java world, and there are not many people who know both Java and REST very well. If you're also in the same boat and want to learn how to develop a RESTful web service using Spring, the REST Spring Masterclass from Eugen Parschiev is a good starting point.

8. Spring Boot 2

There is also a new release of the Spring Boot framework, Spring Boot 2. If I get some time after all these goals this year, I'll spend some time learning Spring Boot 2. If you also want to learn Spring Boot 2, you can check out this free Spring Boot course from Udemy for a quick start.

9. Spring Security 5.0 (OAuth)

This is the third major upgrade on the Spring eco-system. The 5th edition of the popular security framework has several bug fixes and a major OAuth 2 module that you can't miss.

This is another priority item for me with the Spring 5.0 Framework stuff in 2022. Thankfully Eugen has updated its best-selling course Learn with Spring Security to include 5.0 features and added a separate module for OAuth 2.0, probably the best material for learning Spring Security 5.0 at the moment.

10. Angular 2+ or React JS

These two JavaScript frameworks have completely changed how you develop web applications. As a Java developer, I've used Servlet, JSP, and jQuery on the client-side, but haven't tried my hand with Angular or React yet.

In 2022, one of my goals is to learn Angular, and I will begin my journey with Udemy's Angular - The Complete Guide. If you're in the same boat, you can take a look at that route as well; this is easy.

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That's all about what Java programmers should learn in 2022? As I said, technology changes at a rapid pace and the biggest challenge for programmers is to keep themselves up-to-date. Apart from this list, there is more than you can look forward to in the new year like learning a new programming language like Kotlin, but for me, I would be happy if I can achieve these goals in 2022.