== Why is this an issue?

The Spring Framework provides several specializations of the generic ``++@Component++`` stereotype annotation which better express the programmer’s intent. Using them should be preferred.


=== Noncompliant code example

[source,java]
----
@Component // Noncompliant; class name suggests it's a @Service
public class CustomerServiceImpl { 
  // ...
}

@Component // Noncompliant; class name suggests it's a @Repository
public class ProductRepository { 
    // ...
}

@Component // Noncompliant; class name suggests it's a @Controller or @RestController
public class FooBarRestController { 
    // ...
}
----


=== Compliant solution

[source,java]
----
@Service // Compliant
public class CustomerServiceImpl { 
  // ...
}

@Repository // Compliant
public class ProductRepository { 
    // ...
}

@RestController // Compliant
public class FooBarRestController { 
    // ...
}

@Component // Compliant
public class SomeOtherComponent {
   // ...
}
----


== Resources

* https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/core.html#beans-stereotype-annotations[Spring documentation - @Component and Further Stereotype Annotations]


ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

=== Message

Use @<SpecializedAnnotation> instead of @Component


'''
== Comments And Links
(visible only on this page)

=== on 11 Dec 2019, 16:42:36 Tibor Blenessy wrote:
Based on community suggestion \https://community.sonarsource.com/t/use-specializations-of-component-for-specific-use-cases/12379

endif::env-github,rspecator-view[]