.> Moving to the next question prevents changes to this answer. Question 15 CommandLineRunner interface can be extended to define a class which has a run() method and this method would be invoked automatically before loading the application context is started. ( which has a run() method and this method would be invoked automatically when loading the application context is finished. O and there can be only one bean implementing the interface in the whole application. which cannot be used to create a simple console-based application using Spring Boot