[Solved] How does “Stream” in java8 work?

Question

abstract class ReferencePipeline<P_IN, P_OUT>
    extends AbstractPipeline<P_IN, P_OUT, Stream<P_OUT>>
    implements Stream<P_OUT>  ...

It’s ReferencePipeline that implements them. For example:

@Override
public final boolean anyMatch(Predicate<? super P_OUT> predicate) {
    return evaluate(MatchOps.makeRef(predicate, MatchOps.MatchKind.ANY));
}

Accepted Answer

abstract class ReferencePipeline<P_IN, P_OUT>
    extends AbstractPipeline<P_IN, P_OUT, Stream<P_OUT>>
    implements Stream<P_OUT>  ...

It’s ReferencePipeline that implements them. For example:

@Override
public final boolean anyMatch(Predicate<? super P_OUT> predicate) {
    return evaluate(MatchOps.makeRef(predicate, MatchOps.MatchKind.ANY));
}