Is this design of Spring singleton beans thread safe?

Question

Consider the following Spring Service class. The spring scope defined is Singleton. The two service beans auto-wired as fields in the class below have similar structure - they t

Answer 1

You can put the @Autowired annotation on top of the services instead of using them in the constructor. It's a Spring managed bean which means it's a singleton. It is thread safe, but that depends on the implementation.

@Service     
public class DocumentService {  

  @Autowired
  private DocumentGenerationService documentGenerationService;

  @Autowired
  private DocumentPublishService documentPublishService;

... methods follow