Java SE 14 (March 2020) introduced a limited form of pattern matching as a preview feature, which becomes a permanent feature in Java SE 16 (March 2021).

Java 23 extends import and patterns, but dispenses with string templates In addition to enhanced preview features such as the Class-File API, the JDK brings innovations in pattern matching and ...

Learn how to use the Command pattern to encapsulate requests as objects that you can execute alone or in sequence in your Java programs.