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Stream<String> stream = Stream.of("hellow", "world", "helloworld");
List<String> list = stream.collect(() -> new ArrayList(),
(theList, item) -> {
System.out.println("-------");
System.out.println("前:theList" + theList);
theList.add(item);
System.out.println("后:theList" + theList);
},
(theList1, theList2) -> {
// System.out.println("1--------");
// theList1.addAll(theList2);
});
list.forEach(System.out::println);
List<String> asList = stringStream.collect(ArrayList::new, ArrayList::add,
* ArrayList::addAll);