运用点：
流内数据类型转换(map)、filter、limit、skip、concat(让两个流合并)
题目：
操作1、2：
ArrayList<String> manList = new ArrayList<>();ArrayList<String> womanList = new ArrayList<>();Collections.addAll(manList,"张三,23","李四,24","王五,25","大的的,27","啊范文,38","大阿迪,22");Collections.addAll(womanList,"杨丹,23","杨健康,24","发烧大户,25","鱼蛋,27","杨贵妃,38","对我的,22");Stream<String> stream1 = manList.stream().filter(s -> s.split(",")[1].length() == 3).limit(2);Stream<String> stream2 = womanList.stream().filter(s -> s.startsWith("杨")).skip(1);
操作3、4、5：
map完整版：
Stream.concat(stream1,stream2).map(new Function<String, Actor>() {@Overridepublic Actor apply(String s) {String name = s.split(",")[0];int age = Integer.parseInt(s.split(",")[1]);Actor actor = new Actor(age, name);return actor;}});
map稍微省略版：
Stream.concat(stream1,stream2).map( s ->{String name = s.split(",")[0];int age = Integer.parseInt(s.split(",")[1]);Actor actor = new Actor(age, name);return actor;});
lambda：
List<Actor> list = Stream.concat(stream1, stream2).map(s -> new Actor(Integer.parseInt(s.split(",")[1]), s.split(",")[0])).collect(Collectors.toList());System.out.println(list);
