| import java.util.function.Function; |
| import java.util.function.Supplier; |
| import java.util.stream.Collector; |
| import java.util.stream.Stream; |
| import java.util.*; |
| |
| class X1 { |
| void test(Stream<Integer> stream) { |
| Function<List<Integer>, List<Integer>> unmodifiableList = Collections::unmodifiableList; |
| stream.collect(collectingAndThen(toList(), unmodifiableList)).remove(0); |
| } |
| |
| public static<T,A1,R,RR> Collector<T,A1,RR> collectingAndThen(Collector<T,A1,R> downstream, |
| Function<R,RR> finisher) { |
| return null; |
| } |
| |
| static <T> Collector<T, ?, List<T>> toList() { |
| return null; |
| } |
| } |