As previously explained, in an application that adheres to the MVC design pattern, there are three primary components of consequence. These components are the model, view, and controller. The models are the components that are in charge of data management and the execution of business logic. In our Place Reviewer application, we are going to implement our models in the form of services that can be used across the backend. At this juncture, we need to create two fundamental services. The first to manage data pertaining to users of the application, and the second to manage review data.
First, we must create a UserService interface that defines the behaviors that must be implemented by a valid UserServiceImpl ...
