171208(금) - @Qualifiers

@Qualifiers

- type 만으로 dependency를 판별하기에는 부족하다.

- interest field or parameter에 적용

class ExpensiveCoffeeMaker {
  @Inject @Named("water") Heater waterHeater;
  @Inject @Named("hot plate") Heater hotPlateHeater;
  ...
}

@Provides @Named("hot plate") static Heater provideHotPlateHeater() {
  return new ElectricHeater(70);
}

@Provides @Named("water") static Heater provideWaterHeater() {
  return new ElectricHeater(93);
}