lesson5：接口 模拟器

题目：

教材160页4.编程题

代码：

package 接口2;public interface Animal {void cry();void getAnimalName();}

package 接口2;public class Simulator {voidpalySound(Animal animal){animal.cry();animal.getAnimalName();}}

package 接口2;public class Dog implements Animal{publicvoid cry(){System.out.println("旺旺");}publicvoid getAnimalName(){System.out.println("狗");}}

package 接口2;public class Cat implements Animal{publicvoid cry(){System.out.println("喵喵");}publicvoid getAnimalName(){System.out.println("猫");}}

package 接口2;public class Test {public static void main(String[] args) {Dog animal=new Dog();Simulator s=new Simulator();s.palySound(animal);Animal animal2=new Cat();s.palySound(animal2);}}

结果：

总结：注意重写接口时需要加public