Rust has sum types named wrongly as enums, which java also has as sealed interfaces. The option type is just one example for a sum type, which is as easy to ex

Rust has sum types named wrongly as enums, which java also has as sealed interfaces. The option type is just one example for a sum type, which is as easy to express in Java as sealed interface Option<T> permits Some<T>, None<T> { record Some<T>(T value) {} record None<T>() {} } Sure, you have written 3 words more than Rust, and?