Get the compact overview of all 18 Java versions from Java 10 to Java 27 – as a free PDF. You’ll instantly know which updates are worth adopting in your project, and see at a glance which Java version introduced a specific feature.
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This Cheat Sheet is perfect for you if...
… you want to upgrade:
but don’t yet have an overview of what has changed since your last Java version.
… you want to look things up quickly:
which Java version introduced a specific feature.
… you want to convince your team:
with a compact overview of all the important Java updates.
I’ve been working with Java for 30 years as a developer, CTO, trainer, author, and speaker – and have helped companies modernize complex Java systems and develop their teams sustainably.
With HappyCoders.eu, I’ve built one of the most widely read Java blogs in the German-speaking world and regularly speak at conferences and user groups.
100 % of the participants who answered would recommend my training – 82 % without reservation.
I LOVE the articles which summarize the new features of a Java version. I think this is the best of its kind as it is both complete and compact enough to read and has nice examples.
Very well-founded information, often even on planned or upcoming features, at the right level for Java programmers, going into depth and covering details and special cases. Also explained in clear language, with lots of code examples.
Both the cheat sheet and the articles explain things simply and clearly – this can save a lot of time otherwise spent slogging through documentation.
Thanks to the English version, also suitable for work; I was able to recommend HappyCoders.eu there, too.
The PDF covers the most important updates of all 18 Java versions from Java 10 to Java 27 on 26 pages – and is updated with every Java release.
My blog covers a wide range of Java, software architecture, and performance topics – from foundational concepts to advanced patterns.
If you want to dive deeper, take a look at my trainings: hands-on, easy to follow, and directly applicable to your day-to-day project work. Instead of pure theory, I focus on principles that help you write code that’s better, more maintainable, and more performant in the long run.
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