Java enums are a class with a fixed number of instances. The thing in Java that is closest to Rust enum's would be sealed classes, which was a preview feature

Java enums are a class with a fixed number of instances. The thing in Java that is closest to Rust enum's would be sealed classes, which was a preview feature in Java 15 and finalized and released with Java 17. https://openjdk.org/jeps/409 https://openjdk.org/jeps/409