Spliterator: Splitting for Parallelism
Implement a custom Spliterator to expose domain data as a splittable stream source.
What Is a Spliterator?
A Spliterator (Splittable Iterator) is the core mechanism behind streams. It iterates elements and can split itself into two parts for parallel processing.
Key Spliterator Methods
Four core methods: tryAdvance (process one element), forEachRemaining (process all remaining), trySplit (split into two), estimateSize (element count estimate).
Spliterator<Integer> sp = List.of(1,2,3,4,5,6).spliterator();
Spliterator<Integer> half = sp.trySplit(); // splits off first ~half
half.forEachRemaining(System.out::println); // 1 2 3
sp.forEachRemaining(System.out::println); // 4 5 6All lessons in this course
- flatMap for Nested Collections
- Parallel Streams: Performance and Pitfalls
- Spliterator: Splitting for Parallelism
- Infinite Streams with iterate and generate