java.util.stream

Interfaces

BaseStream	Base interface for streams, which are sequences of elements supporting sequential and parallel aggregate operations.
Collector	A mutable reduction operation that accumulates input elements into a mutable result container, optionally transforming the accumulated result into a final representation after all input elements have been processed.
DoubleStream	A sequence of primitive double-valued elements supporting sequential and parallel aggregate operations.
IntStream	A sequence of primitive int-valued elements supporting sequential and parallel aggregate operations.
LongStream	A sequence of primitive long-valued elements supporting sequential and parallel aggregate operations.
Stream	A sequence of elements supporting sequential and parallel aggregate operations.

Collectors	Implementations of `Collector` that implement various useful reduction operations, such as accumulating elements into collections, summarizing elements according to various criteria, etc.
StreamSupport	Low-level utility methods for creating and manipulating streams.