1 package coffee; 2 3 import dagger.Lazy; 4 import javax.inject.Inject; 5 6 class CoffeeMaker { 7 private final Lazy<Heater> heater; // Create a possibly costly heater only when we use it. 8 private final Pump pump; 9 10 @Inject CoffeeMaker(Lazy<Heater> heater, Pump pump) { 11 this.heater = heater; 12 this.pump = pump; 13 } 14 15 public void brew() { 16 heater.get().on(); 17 pump.pump(); 18 System.out.println(" [_]P coffee! [_]P "); 19 heater.get().off(); 20 } 21 } 22
