Top 6 Online Course to learn from Java 9 to Java 23 in 2025 - Best of Lot

Hello guys, even though Java 15 is available now, many developers are still on Java 8 and not really caught up with changes in Java 9, 10, 11, 12, 13, or Java 14. If you are also in the same boat and want to start with Java 9 features, you have come to the right place. This article will share some of the best online courses to learn changes in Java 9, 10, 11, and later add more classes for Java 12, 13, 14, and 15. These JDK releases are packed with powerful features like modules, API enhancements like factory methods for an immutable list, set, and map, some changes on stream API and optional class, new features on process API, etc.

Since it's always good to keep yourself up-to-date, it's time to spend some time learning those new features and make use of them to write better code in Java. When it comes to learning a new technology or a new thing, online courses work best.

They help you to get going quickly by providing the essential stuff and encouraging you to learn more.

Books are also good, but you learn quickly using online courses than books.

In my opinion, you should read a book after finishing a course to further cement the concepts and fill the gaps, as more often, books provide more comprehensive coverage.

In this article, I will share some of the best online courses to learn new features from JDK 9, 10, 11, 12, 13, and Java 17 releases. I know you may be thinking that Java 21 is already out, and here we are learning about Java 9 to Java 23 features, but that's the reality.

Many Java developers are still using Java 8, and these courses are designed to help you master the most in-demand Java features like Records, Text Block, Switch Expressions, Helpful NullPointerExceptions, Modules, Reactive streams, HTTP 2.0.

The new HttpClient library introduced in Java 11, and other API changes. Especially if you're going for a job interview or have a Java Project that needs your best performance.

5 Best Courses to Learn Java 8 and Java 21 Features

Here is my list of some of the best online courses to pick up the changes and new features introduced in Java 9, 10, 11, and Java 12. As you might know, Java 13 was also released last week will update the list when I find a suitable course or tutorial to learn Java 13 features. So, you can always come back here to see the Java courses to learn the latest and greatest features introduced in recent versions.

1. The Complete Java Masterclass [Udemy Best course]

This is one of the best courses to learn core Java and new features introduced in recent Java releases. The course covers new features of Java 9, 10 and updated to cover Java 11 recently.

It's not only the most up-to-date course but also provides a complete Java learning experience. For example, if you are just starting with programming and choose Java 11, begin with the course you should join.

2. What's New in Java 11: Long-term Support [Pluralsight]

I know that staying up-to-date with Java has become a challenge for Java developers due to this 6-month cycle, and Java 11 was released just after 6 months of the JDK 10 release, but one thing that was different about Java 11 was that it was an LTS release like Java 8.

The most exciting feature of Java 11 was the new HttpClient API, which this course explores in good detail. It also gives an overview of dependencies removed in Java 11, which can affect your codebase.

So, if you don't want to jump from Java 8 to Java 9 to Java 10, you can directly upgrade your application from LTS to LTS releases like Java 8 to Java 11.

What’s New in Java 11: Long-term Support Pluralsight course

3. Java New Features - Java 14, Java 10 [Udemy course]

The goal of the course was not to simply go quickly through all the new features in Java 10 and Java 14, but it is designed to help you really understand these new features.

This course explains most of the new features of Java 14, like Records, Text Blocks in Java, Helpful NullPointerException, Pattern Matching for instanceOf operator, Switch Expression, and a depth understanding of other new Java features.

It also covers essential new Java features between Java 9 and Java 14, like Modularity. The Java Platform Module System is probably the feature most developers have heard about when they think about Java 9. The Java 9 Platform Module System allows Java to move forward by modularizing the JDK and adding modules as first-class citizens to Java.

Then they also cover local variable type inference from Java 11 and new HttpClient, overall a great course to learn new Java features between Java 9 and java 14. It's not comprehensive, but it covers essential elements, and the creator has a plan to add more features between Java 11 and Java 13.

best java course to learn Java 10 and Java 14 features

4. What's New in Java 10: Local-variable Type Inference

This course is ideal for learning whatever is newly introduced in Java 10. It's not a complete Java course but a delta of recent Java changes on JDK 10. As you might know that Java 10 was released just 6 months after Java 9, but it is still packed with some useful features like using var to declare a local variable and some performance improvement on the G1 garbage collector.

If you want a quick showdown of Java 10 features, you can also look at my earlier article about the Essential Java 10 features you should know.

5. What is New in Java 9 on Pluralsight

In this course, What's New in Java 9, you'll get an overview of the most significant changes to the language and libraries.

First, you'll delve into the module system, introducing modules into the Java language. Then, you'll discover JShell, a new tool for interactively experimenting with Java code.

Finally, you'll explore more minor and incremental changes, such as improvements to APIs like Stream and Optional, the addition of collection factory methods, and newly introduced APIs such as ProcessHandle and HttpClient.

When you're finished with this course, you'll be ready to make the most of Java 9 in your own projects.

6. Java 9 Modularity: First Look

This is a bonus course to learn Java Modules or Project Jigsaw in depth. You will know what modules are and how modular design using the Java module system increases your Java applications' flexibility, maintainability, and security.

It also discusses how existing migrating applications to the new Java module system are addressed, with new Java features such as automatic modules.

When you're finished with this course, terms like encapsulation and explicit module dependencies will be no secret to you.

5 Online Courses to Learn Java 9 10 and 11 and 14

By the way, you would need a Pluralsight membership to join this Pluralsight course which costs around $29 per month or $299 per year (14% discount). I highly recommend this subscription to all programmers as it provides instant access to more than 7000+ online courses to learn any tech skill. Alternatively, you can also use their 10-day-free-trial to watch this course for FREE.

That's all about some of the best courses to learn Java 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, and 23 in 2025. These courses provide a good overview of essential Java features and show some real-world examples of where you can use the new JDK features like building RESTful web services.

The new year has just started, and it's probably the best time to master Java 9, 10, and Java 11 features to update yourself with the latest and greatest in Java.

Other Java and Programming Articles you may like

Thanks for reading this article so far. If you like these advanced Java online courses to learn new Java features, please share them with your friends and colleagues. If you have any questions or feedback, then please drop a comment.

P. S. - If you want to learn Java from scratch and looking for some free resources, then here is a list of my favorite free resources to learn Java in depth. You will find a lot of valuable free courses to learn Java there.

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