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eturn String.format("%s cannot drink, because there is no cup in the era.", person.getName());
};
}
// 工厂方法创建复杂对象
@NotNull
public static Person stoneAgeSupportWithNameAndEra(String name, EraEnvironment era) {
DefaultPerson oriPerson = new DefaultPerson(name);
return new StrategicPerson(oriPerson, stoneEraSupport(oriPerson, era));
}
}
@Value
public class StrategicPerson implements Person {
// 使用组合
Person person;
// 支持多种策略,拓展性好
DrinkStrategy drinkStrategy;
@Override
public String drinkCoffee() {
return drinkStrategy.drink();
}
// 除需要更改的方法外，其他实现委托给原 Person. 比较烦的是：需要委托的方法多的话，都要单独编写方法
@Override
public String getName() {
return person.getName();
}
public static void main(String[] args) {
Person eric = Persons.stoneAgeSupportWithNameAndEra("eric", new StoneAge());
System.out.println("eric.drinkCoffee() = " + eric.drinkCoffee());
}
}
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