Java 22 introduces stream gatherers, a new mechanism for manipulating streams of data. Stream gatherers are the delivered feature for JEP 461, allowing developers to create custom intermediate operators that simplify complex operations. At first glance, stream gatherers seem a bit complex and obscure, and you might wonder why you'd need them. But when you are confronted with a situation that requires a certain kind of stream manipulation, gatherers become an obvious and welcome addition to the Stream API.
