This session provides a gentle introduction, with examples, to the Java Platform Module System in JDK 9. You will learn the basic concepts of the module system and be introduced to the modules that are built into the Java platform. You will also find out how to develop a module from scratch and how to compile, test, and run it. Alan Bateman Consulting Member of Staff in the JDK team in Oracle. I'm currently focused on the Java Platform Module System and the Modular JDK that targets JDK 9. I'm an active member of the OpenJDK project and have a long history in the development of JDK. [WGS-9297]