Here you can find the source of createStream(final Iterator
public static <T> Stream<T> createStream(final Iterator<T> iterator)
//package com.java2s; /*//from w w w.ja v a 2 s . com * Copyright 2014 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.Iterator; import java.util.Spliterators; import java.util.stream.Stream; import java.util.stream.StreamSupport; import static java.util.Objects.requireNonNull; public class Main { /** * Creates a stream based on the provided iterator. */ public static <T> Stream<T> createStream(final Iterator<T> iterator) { // TODO: is this the way to go? requireNonNull(iterator, "Iterator must not be null"); return StreamSupport.stream(Spliterators.spliterator(iterator, 0L, 0), false); } }