forEachOrdered在并行情况下,按顺序执行。 代码: //如果不是parallel()并行处理, 这2个方法没区别 Stream.of("AAA","BBB","CCC").forEach(s->System.out.println("Output:"+s)); Stream.of("AAA","BBB","CCC").forEachOrdered(s->System.out.println("Output:"+s)); //parallel()并行处理的情况...
②在forEachOrderedf方法的代码。 Stream.of("A","B","C", "D") .forEachOrdered(e -> System.out.println(e)); 1. 2. 输出为A B C D。 如果顺序很重要,最好始终使用forEachOrdered方法。 4.使用并行流(parallel stream) ① 在并行流中forEach不保证按顺序执行。 Stream.of("A","B","C", ...
2. Stream forEach() vs forEachOrdered() The behavior offorEach()operation is explicitly non-deterministic. For parallel streams,forEach()operation does not guarantee to respect the encounter order of the Stream. While theforEachOrdered()operationrespects theencounter order of the stream if the s...
forEach(System.out::print); 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ABC ABC abc bac 猜测:forEach与forEachOrdered在串行流下没区别 并行流parallelStream下forEachOrdered严格按照顺序(效率低),forEach与线程执行速度有关(效率高) count findAny、findFirst 、max与min findAny(找到并返回任何一个(...
...> forEach(System.out::println); 输出是 5 和 6,正如预期的那样,因为它们大于 5,小于 7。 流终端操作 终端操作是遍历中间操作管道并进行适当调用的值或副作用操作。它们可以处理返回的值(forEach(...)、forEachOrdered(...)),也可以返回以下任意值: 迭代器(例如iterator()和spliterator()方法) 集合(...
5.1 forEach 遍历元素。 案例19:遍历一个数组并打印 List<Integer> array = Arrays.asList(5, 2, 3, 1, 4); array.stream().forEach(System.out :: println); 输出结果: 5 2 3 1 4 5.2 forEachOrdered 按照给定集合中元素的顺序输出。主要使用场景是在并行流的情况下,按照给定的顺序输出元素。
sorted.forEach(System.out::println); } record Person(String name, LocalDate dateOfBirth, String city) { public int age() { return Period.between(dateOfBirth(), LocalDate.now()).getYears(); } } The list of persons is sorted by age and then by name. ...
voidforEachOrdered(Consumer<? super T> action) Performs an action for each element of this stream, in the encounter order of the stream if the stream has a defined encounter order. static <T> Stream<T>generate(Supplier<? extends T> s) Returns an infinite sequential unordered stream...
特征值表示为元素定义遇到顺序。 如果是这样,此拆分器将保证该方法#trySplit拆分元素的严格前缀,该方法#tryAdvance按前缀顺序逐个元素执行,并#forEachRemaining按遇到顺序执行操作。 如果相应的Collection#iterator文档为订单,则 ACollection有一个遇到订单。 如果是,则遇到顺序与记录的顺序相同。 否则,集合没有遇到顺序。
voidforEachOrdered(DoubleConsumer action) Performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order. static DoubleStreamgenerate(DoubleSupplier s) Returns an infinite sequential unordered strea...