Java 9 to 11

A 1 to 2-day course on Java 9 to 11: From new language features, APIs, and JVM capabilities to migration challenges, JDK distributions, and the 6-month release cycle

This course teaches everything a Java developer needs to know when starting to work with Java 11: It introduces new language features, new and updated APIs, JVM improvements, and the essentials of the Java module system (for a deeper dive, there's a separate course). All of these topics are taught with theoretical introductions, practical exercises, and usage recommendations.

Beyond introducing everything new in Java 9 to 11, this course also teaches how to overcome migration challenges and discusses the six-month release cadence as well as licensing/support of JVM distributions.

Java developers who want to start using Java 11
Good Java 8 skills, particularly a solid understanding of lambdas
1-2 days


After completing this course, participants will be able to:

  • assess and perform a project's migration from Java 8 to 11
  • determine a Java update strategy and pick a JDK distribution that fits their project
  • use new language features to write more readable and maintainable code
  • use new and improved APIs to their full effect
  • understand what the module system has to offer
  • improve their projects with new JVM features


  • migration from Java 8 to 11
  • release cadence, distributions, and support
  • new language features like var and private interface methods
  • new APIs like collection factories, reactive streams, and the reactive HTTP/2 client
  • updated APIs like Stream, Optional and OS processes
  • Java module system basics
  • new JVM-Features like scripting support, unified logging, and multi-release JARs
  • performance improvements like application class-data sharing

Upcoming Public Sessions

While I mostly provide these courses in-house, there's the occasional public session that everybody can attend. None are planned now, but if you get in touch, I'll let you know when that changes.

Past Public Sessions


Wed, December 2nd to
Thu, December 3rd, 2020
Java 9 to 15
at DOAG - Berliner Expertenseminar