Lesson5 接口2

课堂练习1：教材160页4.编程题

（1）代码实现

public interface Animal {   void cry();   String getAnimalName();}

public class  Cat implements Animal {String name="猫咪";public void cry() {System.out.println("喵喵");}public String getAnimalName() {System.out.println(name);return name;}}

public class Dog implements Animal {String name="狗狗";public void cry() {System.out.println("汪汪");}public String getAnimalName() {System.out.println(name);return name;}}

public class Simulator {  void playSound(Animal animal) {  animal.cry();  animal.getAnimalName();  }}

public class Test {public static void main(String[] args) {// TODO Auto-generated method stubSimulator simulator=new Simulator();simulator.playSound(new Dog());simulator.playSound(new Cat());}}

（2）运行结果

汪汪
狗狗
喵喵
猫咪