title: Spring inject without autowire annotation
body: <p>I find some answer: <a href="https://stackoverflow.com/a/21218921/2754014">https://stackoverflow.com/a/21218921/2754014</a> about Dependency Injection. There isn't any annotation like <code>@Autowired</code>, <code>@Inject</code> or <code>@Resource</code>. let's assume that there isn't any XML configuration for this example <code>TwoInjectionStyles</code> bean (except simple <code>&lt;context:component-scan base-package="com.example" /&gt;</code>.</p>
  
  <p>Is it correct to inject without specify annotation?</p>