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What's New in Java 9

by Sander Mak

It is time to get up to speed with the release of Java 9 and its developments. In this course, you'll learn about the new features, such as the module system, newly introduced APIs, and changes to the language.

What you'll learn

Java 9 is packed with new features. In this course, What's New in Java 9, you'll get an overview of the most important changes to the language and libraries. First, you'll delve into the module system, introducing modules into the Java language. Then, you'll discover jshell, a new tool for interactively experimenting with Java code. Finally, you'll explore smaller and incremental changes, such as improvements to APIs like Stream and Optional, the addition of collection factory methods, and newly introduced APIs such as ProcessHandle and HttpClient. When you're finished with this course, you'll be ready to make the most of Java 9 in your own projects.

About the author

Sander is Director of Technology at Picnic —the Dutch online grocery scale-up— building Java-based systems at scale. He also is a Java Champion and author of the O'Reilly book 'Java 9 Modularity' (see As an avid conference speaker, Sander loves sharing knowledge, also through his blog at and as Pluralsight instructor.

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