An object for traversing and partitioning elements of a source. The source of elements covered by a Spliterator could be, for example, an array, a Collection , an IO channel, or a generator function. A Spliterator may traverse elements individually ( tryAdvance() ) or sequentially in bulk ( forEachRemaining() ).

What is Spliterator vs iterator?

An Iterator is a simple representation of a series of elements that can be iterated over. A Spliterator can be used to split given element set into multiple sets so that we can perform some kind of operations/calculations on each set in different threads independently, possibly taking advantage of parallelism.

What is StreamSupport in Java?

public final class StreamSupport extends Object. Low-level utility methods for creating and manipulating streams. This class is mostly for library writers presenting stream views of data structures; most static stream methods intended for end users are in the various Stream classes.