I want to know the best and efficient way to update an entity, which is industry practice. What I know at this moment to update an entity

@Service
public class StudentService {

    @Autowired
    private StudentRepository repository;

    public Student findById(Long id) throws EntityNotFoundException {
        return repository.findById(id).orElseThrow(() -> new EntityNotFoundException("Student not found with id: " + id));
    }

    public Student updateStudent(Long id, Student updatedData) throws EntityNotFoundException {
        
        Student existingStudent = findById(id);

       
        existingStudent.setFirstName(updatedData.getFirstName()); 
        existingStudent.setLastName(updatedData.getLastName());
        existingStudent.setEmail(updatedData.getEmail());
        existingStudent.setDepartment(updatedData.getDepartment());
        existingStudent.setPhone(updatedData.getPhone());

        return repository.save(existingStudent);
    }
}

Here I had to manually set all the fields. If I had 20+ fields, was it an efficient approach to update an entity? What is the efficient approach to do that?