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>() {

            @Override
            public 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);