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> R collect(Supplier<R> supplier,  ObjLongConsumer<R> accumulator,  BiConsumer<R,R> 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<Long> collect = longs.collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
		LongStream longs1 = random.longs(3, 3000L, 10000L);
		ArrayList<Long> 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]

标签：LongStream,collect,对象,ArrayList,random,List,longs
来源： https://www.cnblogs.com/ceeSomething8/p/15972464.html