我也需要它，因此我只是从b93中获取了源代码并将其放在“ util”类中。我必须对其稍作修改以使用当前的API。
供参考，以下是工作代码（风险自负…）：
public static<A, B, C> Stream<C> zip(Stream<? extends A> a, Stream<? extends B> b, BiFunction<? super A, ? super B, ? extends C> zipper) { Objects.requireNonNull(zipper); Spliterator<? extends A> aSpliterator = Objects.requireNonNull(a).spliterator(); Spliterator<? extends B> bSpliterator = Objects.requireNonNull(b).spliterator(); // Zipping looses DISTINCT and SORTED characteristics int characteristics = aSpliterator.characteristics() & bSpliterator.characteristics() & ~(Spliterator.DISTINCT | Spliterator.SORTED); long zipSize = ((characteristics & Spliterator.SIZED) != 0) ? Math.min(aSpliterator.getExactSizeIfKnown(), bSpliterator.getExactSizeIfKnown()) : -1; Iterator<A> aIterator = Spliterators.iterator(aSpliterator); Iterator<B> bIterator = Spliterators.iterator(bSpliterator); Iterator<C> cIterator = new Iterator<C>() { @Override public boolean hasNext() { return aIterator.hasNext() && bIterator.hasNext(); } @Override public C next() { return zipper.apply(aIterator.next(), bIterator.next()); } }; Spliterator<C> split = Spliterators.spliterator(cIterator, zipSize, characteristics); return (a.isParallel() || b.isParallel())? StreamSupport.stream(split, true): StreamSupport.stream(split, false);}
