Hello! Although it's not the part of public API, there are references to non-existing methods in SliceOps.java and Streams.java: http://hg.openjdk.java.net/jdk9/dev/jdk/file/f160dec9a350/src/java.base/shar... // @@@ OOMEs will occur for LongStream.longs().filter(i -> true).limit(n) http://hg.openjdk.java.net/jdk9/dev/jdk/file/f160dec9a350/src/java.base/shar... * <p>This is optimized for cases such as LongStream.longs() that is ... There's no method like LongStream.longs(). http://hg.openjdk.java.net/jdk9/dev/jdk/file/f160dec9a350/src/java.base/shar... * <p>This is optimized for cases such as IntStream.ints() that is ... There's no method like IntStream.ints(). Probably these comments should be changed to avoid confusion. With best regards, Tagir Valeev.