Alternative answer to http://stackoverflow.com/questions/15547485/how-to-inject-the-default-guice-provider-into-my-custom-provider

gistfile1.java

public class AccountTest {

   @Test
   public void test() {
       Injector injector = Guice.createInjector(new AbstractModule() {

           @Override
           protected void configure() {
               bind(MyClass.class).toProvider(MyClassProvider.class);
           }
       });

       MyClassUser user = injector.getInstance(MyClassUser.class);

       assertTrue(user.get().myProvider);
   }
}

class MyClassUser {
    Provider<MyClass> provider;

    @com.google.inject.Inject
    public MyClassUser(Provider<MyClass> provider) {
        this.provider =  provider;
    }

    MyClass get() {
        return provider.get();
    }
}

class MyClass {
    boolean myProvider = false;
}

class MyClass2 extends  MyClass {}

class MyClassProvider implements Provider<MyClass> {
    Provider<MyClass2> provider;

    @com.google.inject.Inject
    public MyClassProvider(Provider<MyClass2> provider) {
        this.provider = provider;
    }

    @Override
    public MyClass get() {
        MyClass c = provider.get();
        c.myProvider = true;
        return c;
    }

    public String toString() {
        return "Our provider";
    }
}