Java After Eight

source code

Want to play around with the code yourself? Check out the repository Java After Eight, a real-life code base, initially on Java 8, that invites an update to Java 15 and to the many new language features, additional and improved APIs, and JVM capabilities - it contains many of the snippets shown in this talk. It has a permissive license, so you can reuse the code for your projects.

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Many projects are still on Java 8 and yet, Java 14 is already out! The small releases after 9 created the illusion of nothing much happening, but nothing could be further from the truth - a lot changed since then that shapes the look of everyday Java code:

new language features like records, switch expressions, var, and text blocks
new APIs like stack walking and the reactive HTTP/2 client
additions to existing APIs, like Stream and Optional

In this talk, we'll take a simple Java 8 code base, update it to 14, and refactor it to use the new language features and APIs. You'll be surprised how much the code changes!

▚Slides

Here's the current version of the slides.

I also embedded them below. If they're focussed, you can navigate with arrow keys or swipes (they're two-dimensional, with chapters on the horizontal axis and chapter content layed out vertically). Use Page Up/Down for linearized order and ? for more shortcuts.