Come hack on the Java implementation that you use everyday!
Its a hackday, so people can work on whatever they want, but activities are likely to include:
* Improved OpenJDK test coverage
* OpenJDK Warnings cleanup
* Small Bugs Fixes
* The betterrev project
If you're not familiar with the openjdk codebase there will be people there to help you get started, including some from IBM who work on OpenJDK professionally.
* OpenJDK: http://openjdk.java.net/
* Adopt Openjdk Information: https://java.net/projects/adoptopenjdk/pages/AdoptOpenJDK
* Betterrev: https://bitbucket.org/adoptopenjdk/betterrev
NB: you need to bring a laptop with you to this event!