Buffer Operator on Java 8 Streams
问题 I am trying to write a java 8 stream collector which mirrors the functionality of rxjava buffer operator I have a working code for this: // This will gather numbers 1 to 13 and combine them in groups of // three while preserving the order even if its a parallel stream. final List<List<String>> triads = IntStream.range(1, 14) .parallel() .boxed() .map(Object::toString) .collect(ArrayList::new, accumulator, combiner); System.out.println(triads.toString()) The accumulator here is this: final