August 2026
Beginner to intermediate
538 pages
14h 40m
English
Content preview from Java in a Nutshell, 9th Edition
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Foreword
It is a period of stable progress and continued change in the Java ecosystem.
The eighth edition of Java in a Nutshell focused on Java 17, the first long-term support version since Java 11 three years earlier. Since that time, the cadence of LTS releases has shortened to every two years and held steady up through Java 25, the target version for this ninth edition.
The early trends around LTS versions have also held true. Interim releases, while useful for keeping a predictable schedule and allowing features to incubate, are rarely deployed to production. The two-year release cycle has proven to be short enough for seeing valuable updates to the platform, but not so harried a pace that teams are discouraged from keeping up.
With the release of Java 25, the language continues moving forward with a mix of incremental language-level improvement like continued investment in pattern matching, and new platform capabilities such as virtual threads.
Java performance continues to improve, and Java 25 is the fastest release yet.
In all, this is a great time to be joining (or returning to) application development in Java. Looking forward, the future still holds major changes that will alter the character of Java development in fundamental ways.
Once again, in working on this new edition of a classic text, if we have preserved the feel of Java in a Nutshell, while updating it to bring it to the attention of a new generation of developers, then we shall be well satisfied.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.