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).

JEP 441, Pattern Matching for the switch, is completed in JDK 21, following four previews in JDKs 17-20 (JEPs 406, 420, 427, 433). It finalizes the feature, addressing feedback from previews, and ...

Here are the top five new Java features developers should be excited to learn about: Multiline comments. Day period support. Pattern matching instanceof calls. List and array creation helpers.