Learn about the Gatherer interface, understand the challenges it solves and the features it provides.

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Java 24 introduces the Gatherer interface, enhancing Java Stream APIs by allowing more flexible intermediate operations. Gatherers facilitate custom data transformations and support asynchronous processing. The article explores built-in Gatherers and demonstrates creating custom Gatherers for diverse input-output mappings, demonstrating how these can be used for one-to-one, one-to-many, many-to-one, and many-to-many relationships.

Stream Gatherers in Java