Java新特性玩转JDK8之收集器 partitioningBy分组

public static <T>
Collector<T, ?, Map<Boolean, List<T>>> partitioningBy(Predicate<? super
T> predicate) {
 return partitioningBy(predicate, toList());
}

        List<String> list = Arrays.asList("java", "springboot", "HTML5", "CSS3");

        Map<Boolean, List<String>> result = list.stream().collect(partitioningBy(obj -> obj.length() > 4));

        System.out.println(result);

控制台输出