疑问
xixifeng opened this issue · comments
xixifeng commented
Stream<String> stream = Stream.of("I", "love", "you", "too");
List<String> list = stream.collect(ArrayList::new,ArrayList::add,(t,u)-> {
System.out.println("t:" + t+" u:" + u);
t.addAll(u);
});
System.out.println(list);
谢谢, 你启发(正反参半)了我.
这个例子,collect的第三个参数并没有执行,若能举一个体现第三个参数作用的例子会更好.
Keanu9527 commented
Stream stream = Stream.of("I", "love", "you", "too").parallel();换成并行流时候,第三个参数会起作用