With JDK 9 development underway in the OpenJDK Community, and based on our experiences with open source projects testing against JDK 9 Early Access builds in the Quality Outreach effort, it seems like a good idea to compile the accumulated wisdom to make it easier for new projects to start testing against JDK 9. In this session, you'll learn how to prepare your code for some of the upcoming changes in JDK 9 and how to join the OpenJDK crowd testing fun with your own open source project to help make JDK 9 better.