The main goal of this project is to explore services based on Java 9
modularity:
- uses
- provides X with Y;
Reference: Java 9 Modularity
Services allow a module to provide implementations to other modules without exporting the concrete implementation class. The module system has special privileges to reach into the provider module to instantiate the nonexported implementation class on behalf of the consumer. This means consumers of the service can use instances of this implementation class, without having access to it directly. Also, a service consumer doesn’t know which module provided an implementation, nor does it need to. Because the only shared type between provider and consumer is the service type (most often an interface).