Stream Map Collect로 Entity > dto 입력

@Entity
@Getter
@RequiredArgsConstructor
public class Member {

    @Id
    @GeneratedValue
    private Long id;

    @Column(length = 50, nullable = false)
    private String userId;

    @Column(length = 100, nullable = false)
    private String userPassword;

    @Column(length = 40, nullable = false)
    private String userName;

    @Column(length = 20, nullable = false)
    private String userPhone;

    @Column(nullable = false)
    private String userBirthdate;

    @Column(length = 2, nullable = false)
    private String userSex;

    @Email
    @Column(length = 100, nullable = false)
    private String userEmail;

    private String fileName;

    private String fileOriName;

    private Long fileSize;

    @CreatedDate
    @Column(nullable = false, updatable = false)
    private Date regDate;

    @Builder
    public Member(Long id, String userId, String userPassword, String userName, String userPhone,
                  String userBirthdate, String userSex, String userEmail, String fileName, String fileOriName, Long fileSize) {
        this.id = id;
        this.userId = userId;
        this.userPassword = userPassword;
        this.userName = userName;
        this.userPhone = userPhone;
        this.userBirthdate = userBirthdate;
        this.userSex = userSex;
        this.userEmail = userEmail;
        this.fileName = fileName;
        this.fileOriName = fileOriName;
        this.fileSize = fileSize;
    }
}

public interface MemberRepository extends JpaRepository<Member, Long> {
    boolean existsByUserId(String userId);
    boolean existsByUserEmail(String userEmail);

    Member findByUserId(String userId);

    @Query(value = "SELECT * FROM MEMBER M WHERE M.ID = (SELECT F.FRIEND_ID FROM FRIEND F WHERE F.MEMBER_ID = :id)", nativeQuery = true)
    List<Member> findMemberByFriendId(@Param("id") Long memberId);

}

@AllArgsConstructor
@Getter
public class FriendListDto {


    private String userId;
    private String userName;

    private String userBirthdate;

    private String fileName;

    public FriendListDto (Member entity) {
        this.userId = entity.getUserId();
        this.userName = entity.getUserName();
        this.userBirthdate = entity.getUserBirthdate();
        this.fileName = entity.getFileName();
    }
}

@Service
public class FriendService {
    @Autowired
    private MemberRepository memberRepository;

    public List<FriendListDto> getFriendList(Long memberId) {
        return memberRepository.findMemberByFriendId(memberId).stream()
                .map(FriendListDto::new).collect(Collectors.toList());
                //.map(member -> new FriendListDto(member.getUserId(), member.getUserName(), 
                //        member.getUserBirthdate(), member.getFileName())).collect(Collectors.toList());
    }

}

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