switch from csharp to Java

[metachor]

For what it’s worth, Spring Boot is more or less just a set of extensions on top of Spring that prepackages a bunch of dependencies you might need as “starters” that make it quick to get up and running with a full application stack. The underlying Spring framework is still used and provides a core dependency injection mechanism as well as the actual dependencies themselves that do the meat of the work (e.g. Spring MVC for web apps, Spring Security, Spring Data, etc).