package w6;

abstract class Animal {
    public abstract void makeSound();
}
interface Swimmable{
    void swim();
}
class Dog extends Animal implements Swimmable{
    @Override
    public void makeSound() {
        System.out.println("汪汪汪");
    }
    @Override
    public void swim() {
        System.out.println("狗会游泳");
    }
}
class Cat extends Animal {
    @Override
    public void makeSound() {
        System.out.println("喵喵喵");
    }
public class Test{
    public static void main(String[] args) {
        Animal dog = new Dog();
        dog.makeSound();
        ((Swimmable) dog).swim();
        Animal cat = new Cat();
        cat.makeSound();

    }
}


    
    
}