java.util.stream.Stream#map

java.util.stream.Stream#map

遍历取值

• Teacher

@Data
@Builder
public class Teacher {
    
    
    private String name;
    private Integer age;
}

• Solution

public class Solution {
    
    
    public static void main(String[] args) {
    
    
        Teacher teacherA = new Teacher.TeacherBuilder().name("AA").build();
        Teacher teacherB = new Teacher.TeacherBuilder().name("BB").build();
        Teacher teacherC = new Teacher.TeacherBuilder().name("CC").build();

        ArrayList<Teacher> teacherArrayList = Lists.newArrayList();
        teacherArrayList.add(teacherA);
        teacherArrayList.add(teacherB);
        teacherArrayList.add(teacherC);

        List<String> collect = teacherArrayList.stream().map(Teacher::getName).collect(Collectors.toList());
        System.out.println(JSON.toJSONString(collect));
    }
}