What difference does @EnableConfigurationproperties make if a bean is already annotated with @ConfigurationProperties?

Question

The Spring Boot documentation says that to use the @ConfigurationProperties annotation

You also need to list the properties classes to regis

Answer 1

It took me a while to reach to this post but would like to add here so that others may get benefited.

@ConfigurationProperties - Used to bind a class with an externalized property file. Very powerful and must be used to separate out bean classes with configuration entity class.

@Configuration - Creates a Spring bean of configuration stereotype.

@EnableConfigurationProperties - Creates a binding between a configuration entity class and Spring configuration stereotype so that after injection within a service properties can be retrieved easily.