Spring Boot Application using Three Layered Architecture in Java

Abstract

A straightforward and scalable method for managing categories and items is offered by the Spring-Boot application. The programme offers three major APIs: one for retrieving all categories, one for retrieving all goods, and one for retrieving all items in a certain category. A Hello-World API is used to check whether the application is running and accessible at the beginning of the programme. First, stubs for the three major APIs are added before the programme is built. The functionality of these stubs is then evaluated piecemeal to make sure it matches expectations. After that, the application receives services, DAOs, and a database.