title: Guice - How to share the same Singleton instance through multiple injectors/modules
body: <p>In guice, the @Singleton scope does not refer to the Singleton pattern.</p>
  
  <p>According to the "Dependency Injection" book of "Dhanji" :</p>
  
  <blockquote>
    <p>Very simply, a singleton’s context is the injector itself. The life of
    a singleton is tied to the life of the injector (as in figure 5.8).
    Therefore, only one instance of a singleton is ever created per
    injector. It is important to emphasize this last point, since it is
    possible for multiple injectors to exist in the same application. In
    such a scenario, each injector will hold a different instance of the
    singleton-scoped object.</p>
  </blockquote>
  
  <p><img src="https://i.stack.imgur.com/3uBBl.png" alt="Singleton scope"></p>
  
  <p><em>Is it possible to share the same Singleton instance through multiple modules and multiple injectors ?</em></p>