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.