CODEWITHSUNDEEP
javaspringspring-bootspring-annotations
Kumar
Kumar

Reputation: 961

Purpose of using set method in below code snippet

I was going through the Spring tutorial and I found below code snippet:

public class EmployeeRestController {
    private Logger logger = LoggerFactory.getLogger(EmployeeRestController.class);

    @Autowired
    private EmployeeService employeeService;

    public void setEmployeeService(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }
}

My Question is that Why this method is used even though the is no call of this method.:

public void setEmployeeService(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }

Thanks

Upvotes: 0

Views: 49

Answers (2)

Sushil Mittal
Sushil Mittal

Reputation: 524

if you have used @Autowired then no requirement of setmethod so refer below code:

@Controller
public class EmployeeRestController {
private Logger logger = LoggerFactory.getLogger(EmployeeRestController.class);

@Autowired
private EmployeeService employeeService;
    } 

@Service
public class EmployeeService{
 }

Upvotes: 0

minhazur
minhazur

Reputation: 4988

I believe this setter method has no significance if you use spring dependency injection to set the dependency on a class property. That's what is happening to EmployeeRestController by using @Autowired annotation to employee service property private EmployeeService employeeService; You can also use setter level dependency injection this way

 @Autowired
 public void setEmployeeService(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }

It's a good and suggested practice to use @Autowired on setter instead of private properties.

Upvotes: 1

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