原单手表网站,网站建设 400电话 广告语,做封面模板下载网站,做调查问卷赚钱哪个网站好类模式
我们知道插座的电压为交流电220V#xff0c;而日常电器使用的是直流电且电压会较小#xff0c;比如手机充电会通过插头适配器达到额定的输入电流。下面我们实现这个案例#xff1a;将220V电压转化为5V的电压。 package Adapter.Class;public class Adapter extends …类模式
我们知道插座的电压为交流电220V而日常电器使用的是直流电且电压会较小比如手机充电会通过插头适配器达到额定的输入电流。下面我们实现这个案例将220V电压转化为5V的电压。 package Adapter.Class;public class Adapter extends Power220V implements Power5V {Overridepublic int output5V() {int input output220V();int output input/44;return output;}
}package Adapter.Class;public class Client {public static void main(String[] args) {Phone phone new HuaWei();phone.charging(new Adapter());}
}package Adapter.Class;public class HuaWei implements Phone{Overridepublic void charging(Adapter adapter) {System.out.println(华为手机适配电压5伏);if(adapter.output5V()5) System.out.println(华为手机充电成功);else System.out.println(华为手机充电不成功);}
}package Adapter.Class;public interface Phone {public void charging(Adapter adapter);
}package Adapter.Class;public interface Power5V {public int output5V();
}package Adapter.Class;public class Power220V {private int power 220;public int output220V() {System.out.println(电压 power 伏);return power;}
}这种模式被称作类模式可以看到Adapter继承了Adaptee(要适配者并且实现了Target(要适配者。对于一对一的适配还有一种模式叫对象模式在这种模式下Adaptee会作为Adapter的成员属性而不是让Adapter去继承Adaptee。
对象模式 package Adapter.Object;public class Adapter implements Power5V {Power220V power220V;public Adapter() {}public Adapter(Power220V power220V) {this.power220V power220V;}Overridepublic int output5V() {int input power220V.output220V();int output input/44;return output;}
}package Adapter.Object;public class Client {public static void main(String[] args) {Phone phone new HuaWei();phone.charging(new Adapter(new Power220V()));}
}双向模式
上面的案例介绍了一对一的适配还有一种适配是双向的。下面用一个案例介绍实现猫学狗叫和狗学猫抓老鼠。 package Adapter.BothWay;public class Adapter implements CatImpl,DogImpl{private CatImpl cat;private DogImpl dog;public CatImpl getCat() {return cat;}public void setCat(CatImpl cat) {this.cat cat;}public DogImpl getDog() {return dog;}public void setDog(DogImpl dog) {this.dog dog;}Overridepublic void catchMice() {System.out.print(狗学);cat.catchMice();}Overridepublic void cry() {System.out.print(猫学);dog.cry();}
}package Adapter.BothWay;public class Cat implements CatImpl{Overridepublic void catchMice() {System.out.println(猫抓老鼠);}Overridepublic void cry() {}
}package Adapter.BothWay;public interface CatImpl {public void catchMice();public void cry();
}package Adapter.BothWay;public class Dog implements DogImpl{Overridepublic void cry() {System.out.println(狗叫);}Overridepublic void catchMice() {}
}package Adapter.BothWay;public interface DogImpl {public void cry();public void catchMice();
}package Adapter.BothWay;public class Client {public static void main(String[] args) {Adapter adapter new Adapter();CatImpl cat new Cat();DogImpl dog new Dog();adapter.setCat(cat);adapter.setDog(dog);cat (CatImpl) adapter;cat.cry();dog (DogImpl) adapter;dog.catchMice();}
}
