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 ...

The Java enum is a powerful feature of the language that allows one to elegantly represent finite values and to provide convenient access to characteristics of those finite values.

Allowing developers to handle an exception from the selector in switch with a case in the switch block would make switch more usable for pattern matching, the proposal says.