Minimal spring example

Small project demonstrating dependency inversion/injection capabilities with bare-bones spring.

Dependencies

./mvnw compile package

./mvnw test

./mvnw compile exec:java

Conversion of this project into a kotlin project is left as exercise.
The jar assembly plugin configuration is left as exercise.
Spring core and context dependencies are the minimum, bare-bones to sample the container and dependency injection.
Properties is the standard way to inject configurations.
Spring test offers some facilities to ease the component testing process.