Where to put @Bean in Spring Boot?

I am wondering what the best place would be for a Spring Boot app to register additional beans. I have a Main class that is annotated with @SpringBootApplication and beans defined in that class are picked up. But when i put those beans in another class it seems that the are not being registered.

When reading the documentation i got the idea that the @SpringBootApplication would implicitly search for classes that have @Bean annotations in them.

So my options are now:

1. 
   

   Put all @Bean annotated bean in my main class

   
   

   
   @SpringBootApplication
   public class MyApplication {
   
       @Bean
       public Filter AuthenticationFilter() {
           return new AuthenticationFilter();
       }
   
       public static void main(String[] args) {
           SpringApplication.run(MyApplication.class, args);
       }
   }
   
   



2. 
   

   Create a configuration class and annotate that with @Configuration

   
   

   
   @Configuration
   public class MyConfiguration {
       @Bean
       public Filter AuthenticationFilter() {
           return new AuthenticationFilter();
       }
   }
   
   

Is there a better way of doing this?