Spring annotation @Validated triggers bean validation. It informs the Spring to put the bean in the validator.
Using @ConfigurationProperties may binding a group of properties in an object, meanwhile making them validated.
@Validated implements a proxy pattern that wraps the proxied data model. However, it introduces proxy behaviours. It may be not a good practice to @Validated data model.
@Validated can be applied on the class level and combined with contrain annotations(@min,@max etc) on the method arguments(primitieve type), or @valid with a complex data type(a nested data model).
Adding the dependency above, rebuilding the project. It generates a json file that list beans annotated with @ConfigurationProperties. This json file is used by the IDE to provide auto-completion and documentation for the properties when editing application.properties and application.yaml files.
