Flow API (Reactive Streams) https://dev.to/ajiteshtiwari/java-9-flow-api-4e38 https://dev.to/ajiteshtiwari/java-9-flow-api-4e38 Collection factory methods http

Flow API (Reactive Streams) https://dev.to/ajiteshtiwari/java-9-flow-api-4e38 https://dev.to/ajiteshtiwari/java-9-flow-api-4e38 Collection factory methods https://openjdk.org/jeps/269 https://openjdk.org/jeps/269 Stream API improvements https://www.javatpoint.com/java-9-stream-api-improvement https://www.javatpoint.com/java-9-stream-api-improvement Honorable mention since not strictly functional, but makes code clearer and integrates well with functional patterns: pattern matching for switch statements https://openjdk.org/jeps/427 https://openjdk.org/jeps/427