The Startup
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The Startup


Jan 2, 2019

13 min read

15 Things Java Developer Should Learn in 2022

Want to start the year off right? Here is a range of topics you can tackle to make yourself a better Java developer from Java 17 to Spring 6.0.

What Java Programmers should learn in 2022

Here is my list of things a Java developer should learn in 2022:

1. DevOps

This is one area where I am seeing a lot of traction last year as more and more companies are moving into DevOps and adopting continuous integration and deployment.

DevOps is very vast and you need to learn a lot of tools and principles and that’s what overwhelms many developers but you don’t need to worry. I have shared a DevOps RoadMap which you can follow to learn and master DevOps at your own speed.

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

If you are looking for some awesome resources then Jenkins, From Zero to Hero: Become a DevOps Jenkins Master is a great course to start with, particularly for Java developers.

2. Git

Git and Github have been around some time and while I have used Git in past with Eclipse, but I am yet to become a master of 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 not so great with Git commands, particularly reverting changes and handling errors.

Since now most of the companies are migrating their projects from SVN, CVS to Git, its high time to learn and master Git. I have recently purchased the Git Complete: The definitive, step-by-step guide to Git from Udemy on their last 10$ sale and this would be the first item to complete in 2022.

3. Java 9–17

As I said, I am still learning Java 8 and many Java developers too. I will also spend some time learning new features of Java 9, Java 10, Java 17 in 2022 but for me, Java 8 is still a priority, until I moved to Java 17 which is another LTS release.

The JDK 9 brings a lot of goodies in terms of modules, Jigsaw, Reactive Streams, Process API, HTTP2 client, JShell, and API improvements like collection factory methods and I am really looking forward to learning them at the earliest opportunity.

Similarly, JDK 10 brings var to give you a flavor of dynamic typing and some GC improvement.

In the last Udemy 10$ sale, I have purchased a host of courses and one of them is The Complete Java MasterClass, which is updated for Java 11 and I am looking forward to starting my Java 11 journey with that.

Btw, if you have yet to start with JDK 8 then here is my list of favorite Java 8 tutorials and courses which you can free of cost: 10 best tutorials to learn Java 8.

4. Spring Framework 6

I have been hearing about some new features like the reactive programming model on Spring 6, adoption of recent Java features, some unit testing improvement, etc but I have yet to try that.

Anyway, I have already started learning Spring 5.0 by following Spring 5. 0: Beginner to Guru and will keep the momentum going in 2022. If you use Spring, probably it’s the best time to learn Spring 5.0.

5. Unit testing

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 test their application e.g. 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 skill will improve but also you will become a more professional developer, which every company looks form. To start with, you can check out the JUnit and Mockito Crash Course from Udemy.

6. RESTful Web Service

One more thing I want to keep improving in 2022 is my knowledge about writing REST API and implementing secure and scalable RESTful Web Service in Java using Spring.

This is one skill that is highly desirable in the Java world and there are not many people who know both Java and REST well.

7. Spring Security 5.0

This is the third major upgrade on Spring Eco-System. The 5th version of the popular security framework has several bug fixes and a major OAuth 2 module, which you just can’t miss.

This is another priority Item for me in 2022 along with Spring 5.0 framework stuff.

8. Spring Boot 2

The Spring Boot framework also has a new release Spring Boot 2. If I get sometime after all these goals this year then I will spend some time learning Spring Boot 2.

9. Angular 2+ or React JS

These two JavaScript framework has completely changed how you develop web applications.

10. Android

If you don’t know how to write Android Apps in 2022 then you are lacking something. Mobile is one of the best platforms to reach a large number of people and Android is probably the most popular platform to write mobile applications.

Even though I know Android basics, I have yet to publish any Android apps, maybe 2022 will change that. If you want to learn Android in 2022, you can check The Complete Android N Developer Course, one of the better courses to learn Android.

11. Apache Spark and Kafka

One more thing I want to keep exploring in-depth in 2022 is the Big Data space, and particularly Apache Spark and Apache Kafka framework.

12. 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 its 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.

In short, whether you are a junior Java developer or an experienced veteran with several years of experience, Having Docker and Kubernetes knowledge is essential for your career progression and job change.

13. Microservices

Microservices are nothing but an extension of RESTful web services with the main objective being to break up your code into small, distributed, and independent services for better development, deployment, and management.

14. Cloud (AWS)

Apart from containers, Cloud is another thing that I think every Software developer and Data Scientist should learn in 2022. Companies of all sizes and domains are now shifting their environments into Cloud for cost-saving and better scalability, which means sooner or later, you need to work with cloud-native applications.

15. Concurrency

Concurrency is one of the skills which separates an average developer from a good programmer. You should not only have an in-depth understanding of fundamental concepts like Thread, Runnable, Object locking, and Synchronization, but you should also be familiar with concepts like deadlock, livelock, race conditions, and how to deal with them.

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