java/w6/AnimalTest.java

package w6;

public class AnimalTest {
    public static void main(String[] args) {
        Animal dog = new Dog();
        Animal cat = new Cat();


        System.out.println("动物叫声测试");
        dog.makeSound();
        cat.makeSound();


        System.out.println("游泳能力测试");
        if (dog instanceof Swimmable) {
            ((Swimmable) dog).swim();
        } else {
            System.out.println("这只动物不会游泳");
        }

        if (cat instanceof Swimmable) {
            ((Swimmable) cat).swim();
        } else {
            System.out.println("猫不会游泳");
        }
    }
}