这里使用map就是让map中的内容作用到s上去

然后我们在map(s->{})中的部分完成了筛选 并且返回一个Actor类型的值

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;public class Main {public static void main(String[] args) {// 1. 创建两个ArrayList的集合ArrayList<String> manList = new ArrayList<>();ArrayList<String> womenList = new ArrayList<>();// 2. 添加数据Collections.addAll(manList, "蔡徐坤,24", "叶齁咸,23", "刘不甜,22", "吴签,24", "谷嘉,30", "肖梁梁,27");Collections.addAll(womenList, "赵小颖,35", "杨颖,36", "高元元,43", "张天天,31", "刘诗,35", "杨小幂,33");// 3. 筛选男演员Stream<String> stream1 = manList.stream().filter(s -> s.split(",")[0].length() == 3).limit(2);// 4. 筛选女演员Stream<String> stream2 = womenList.stream().filter(s -> s.split(",")[0].startsWith("杨")).skip(1);// 5. 合并演员名字并封装为Actor对象List<Actor> actorList = Stream.concat(stream1, stream2).map(s -> {String name = s.split(",")[0];int age = Integer.parseInt(s.split(",")[1]);return new Actor(age,name);}).collect(Collectors.toList());// 6. 打印结果for (Actor actor : actorList) {System.out.println(actor);}}
}