Java8 stream 提取對象 List 中的某一字段生成新的 List

//輸出List
StudentInfo.printStudents(studentList);
//從對象列表中提取一列(以name為例)
List<String> nameList = studentList.stream().map(StudentInfo::getName).collect(Collectors.toList());
//提取后輸出name
nameList.forEach(s-> System.out.println(s));