A case for layers with a sprinkle of other learnings mixed in — java.lang.IllegalArgumentException: No enum constant found could occur in a backend when the client sent in an String representing a certain command subtype that did not map to any known subtype. This application did not really do layering so it made sense to the developers to catch this Exception as they…

I have wanted to create a sample application for a long time but never got around to it. I mostly want to create the business logic and the architecture based on clean architecture. But lets do a few basic selections to get started Build system We will go with maven. We…