| /* |
| * Copyright (C) 2020 The Dagger Authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package example.dagger; |
| |
| import dagger.Lazy; |
| import javax.inject.Inject; |
| |
| /** A coffee maker to brew the coffee. */ |
| public class CoffeeMaker { |
| private final CoffeeLogger logger; |
| private final Lazy<Heater> heater; // Create a possibly costly heater only when we use it. |
| private final Pump pump; |
| |
| @Inject |
| CoffeeMaker(CoffeeLogger logger, Lazy<Heater> heater, Pump pump) { |
| this.logger = logger; |
| this.heater = heater; |
| this.pump = pump; |
| } |
| |
| public void brew() { |
| heater.get().on(); |
| pump.pump(); |
| logger.log(" [_]P coffee! [_]P "); |
| heater.get().off(); |
| } |
| } |