Introducing JDK 17 Sealed Classes – Sealed and Hidden Classes

167. Introducing JDK 17 Sealed Classes Among the cool features of JDK 17, we have JEP 409 (Sealed Classes). This JEP provides an explicit, intuitive, crystal clear solution for nominating ... Read MoreRead More

0 Comments 2021-06-20

Introducing the permits clause – Sealed and Hidden Classes

168. Introducing the permits clause In the previous problem, you saw how to write a closed hierarchical model in a single source file. Next, let’s use the Fuel.java source file ... Read MoreRead More

0 Comments 2021-04-27