Top Architect

Sep 19, 2021 · Fundamentals

Key New Features in Java 9–16: Private Interface Methods, Var, Switch Expressions, Records and More

This article provides a concise walkthrough of the most important Java 9‑16 language enhancements—including private methods in interfaces, diamond support for anonymous classes, enhanced try‑with‑resources, var type inference, switch expressions, text blocks, records, improved NullPointerException messages, foreign‑memory APIs, sealed classes and new garbage collectors—illustrated with clear code examples.