Welcome to CodeJava.net - where Java gets a little less painful.
Here you’ll find hundreds of practical tutorials, step-by-step guides, code examples, and sample projects covering everything from Core Java and Java SE to Jakarta EE, Spring Framework, Spring Boot, and more.
No magic. No unnecessary theory. Just Java explained with real code you can actually use.
Our goal is simple: help you learn faster, code better, and maybe enjoy Java a little more along the way.
Why does a small part of your code do most of the work, cause most of the bugs, and steal most of your time?
Watch this funny video to find out:
Absolutely New to Java programming?
Get started in minutes with the following well-written tutorials that help you walk the very first steps in Java programming world:
What is Java?
Understand key features of Java programming language
How to write, compile and run your first Java program
Prefer reading over watching videos? No problem - we’ve got plenty of Java for your eyeballs.
Browse all our Java programming tutorials, neatly organized into categories like Java Core, Java SE, Jakarta EE, Spring Framework, Spring Boot, and more.
Prefer watching code instead of reading walls of text? We’ve got you covered.
Head over to our YouTube channel and watch Java, Spring, and Spring Boot coding in action - bugs, fixes, and all.
Latest Java Tutorials:
We regularly add and update Java posts on weekly basis. Below are the recently added posts:
Enjoy 15 hilarious Java developer memes about AI coding, vibe coders, coding agents, Spring Boot, hallucinations, bugs, and the future of programmers.
In this tutorial, I'll guide you step by step through downloading, installing, and configuring OpenJDK 25 on Windows. You'll learn how to set JAVA_HOM [ ... ]
Learn how to download and install OpenJDK 25 on macOS step by step, configure JAVA_HOME and PATH, and verify Java 25 installation on your Mac.
Is Java still worth learning in the AI era? As a Java developer, I share my concerns about AI, programming jobs, and Java’s future, then reflect on [ ... ]
I’ve used Java String for years, but I had never seriously asked how large a String could actually be. So I experimented with the limits myself - fr [ ... ]
View more latest Java tutorials...
Featured Java Tutorials:
These Java tutorials are recommended read for programmers at any level. Read them to get insights and gain in-depth understanding about Java programming:
Java Getter and Setter Tutorial - from Basics to Best Practices
How to become a good programmer? 13 tasks you should practice now
Understanding equals() and hashCode() in Java
Understanding Object Ordering in Java with Comparable and Comparator
How to get Java Certifications - 5 Steps to Become a Certified Java Programmer
Featured Java Videos:
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Featured Java Courses:
Recommended video-based courses that will take your Java development skills to the next level. Elevate your expertise by learning to build real-world applications that work. Learn at your own pace, anytime, anywhere with lifetime access:
