📄️ Java 15 Features Intro
Features in short
📄️ Sealed Classes and Interfaces
In Java, by default, there is no restriction on a class which public interfaces it can impliment. Since Java 15, now a class or interface can be declared sealed class or sealed interface using the modifier sealed.
📄️ Java EdDSA (Ed25519 / Ed448)
EdDSA (Edwards-Curve Digital Signature Algorithm) [RFC 8032] is another additional digital signature scheme added in Java 15 thorough JEP 339.