Talk

Data modeling is one thing in Java that didn't change much in the last 20 years when generics and enumerations were introduced. Things are changing on two fronts. On the one hand, Valhalla is bringing Primitive Classes and Value Classes, bringing new ways for the JVM to layout your objects in memory, in order to get better performances. On the other hand, the Amber project brings back data at the center of your applications: Records bring better modelization, and along with Pattern Matching and Sealed Types, they also bring new ways to organize your business processes. In the future, Valhalla will unify object types and primitive types, with better handling of null values. Amber will continue to develop pattern matching, with deconstructors for regular classes and named patterns. These new approaches will bring new ways to better organize your applications, and to better create independent modules. The new data types Valhalla will bring you will allow you to create your object model in a different way, to get better performances for your in-memory computations. Expect to see a lot of code in this deep dive session, with new patterns, and performance considerations.