场景
使用Random类获取伪随机数时,发现longs方法获得了LongStream对象,而我想将其转换为List对象,因为不熟悉流式编程所以特此记录。
语法与说明
R collect(Supplier supplier, ObjLongConsumer accumulator, BiConsumer combiner)
对流对象做转换。
例子
将LongStream对象转换为List对象
Random random = new Random();
LongStream longs = random.longs(10, 0L, 3000L);
ArrayList collect = longs.collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
LongStream longs1 = random.longs(3, 3000L, 10000L);
ArrayList collect1 = longs1.collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
collect.addAll(collect1);
System.out.println(collect);
结果:
[2500, 1400, 1289, 184, 179, 875, 800, 2580, 1608, 318, 3844, 3359, 8699]
Original: https://www.cnblogs.com/ceeSomething8/p/15972464.html
Author: cee_nil
Title: LongStream对象转化为List对象
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