App.java

import io.crystalline.jigsaw.client.Client;
import io.crystalline.jigsaw.repo.SimpleCustomerRepository;

public class Application {

    public static void main(String[] args) {
        SimpleCustomerRepository repo = new SimpleCustomerRepository();
        Client client = new Client(repo);
        client.demonstrate();
    }
}

module-infos.java

module io.crystalline.jigsaw.app {
    requires io.crystalline.jigsaw.client;
    requires io.crystalline.jigsaw.repo;
}

module io.crystalline.jigsaw.client {
    exports io.crystalline.jigsaw.client;
    requires io.crystalline.jigsaw.client.needs;
}

module io.crystalline.jigsaw.client.needs {
    exports io.crystalline.jigsaw.client.needs;
}

module io.crystalline.jigsaw.repo {
    exports io.crystalline.jigsaw.repo;
    requires io.crystalline.jigsaw.client.needs;
}