Java Iterator转换成List3种方式（while循环、forEachRemaining()、StreamSupport.stream()）

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1 while循环

        Iterator<String> stringIterator = new ArrayList<>(Arrays.asList("a", "b", "c")).iterator();
        //使用while循环将Iterator转换成List
        List<String> list = new ArrayList<>();
        while (stringIterator.hasNext()) {
            list.add(stringIterator.next());
        }

2 forEachRemaining()

        Iterator<String> stringIterator = new ArrayList<>(Arrays.asList("a", "b", "c")).iterator();
        //使用forEachRemaining()将Iterator转换成List
        List<String> list1 = new ArrayList<>();
        stringIterator.forEachRemaining(list1::add);

3 StreamSupport.stream()

        Iterator<String> stringIterator = new ArrayList<>(Arrays.asList("a", "b", "c")).iterator();
        //使用StreamSupport.stream()将Iterator转换成List
        //先将Iterator转成Iterable
        Iterable<String> stringIterable = () -> stringIterator;
        //再将Iterable转成List
        List<String> list2 = StreamSupport.stream(stringIterable.spliterator(), false).collect(Collectors.toList());