title: Java Dependency Injection with Multiple Implementations
body: <p>My question: is there a way to use javax.inject (or any other Java injection framework) for a consumer of a Provider to use multiple implementations at runtime if the number of implementations is unknown at build time?</p>
  
  <p>Some background on my need for this: I work on reusable frameworks which, for the most part, combine the use of a factory and a service locator to load implementations. Several of these seem like they could be reworked to use proper dependency injection, at least insofar as removing the service locator, but there are some that require loading all implementations found on the class path. This is achieved through a simple "multi-implementation" implementation which then loads the other implementations, saving the instances off in a collection and looping over them when the API is called.</p>