java/w6/Main.java

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

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

        System.out.println("\n=== 多态调用测试 ===");
        testAnimal(dog);
        testAnimal(cat);

        System.out.println("\n=== 游泳能力测试 ===");
        if (dog instanceof Swimmable) {
            ((Swimmable) dog).swim();
        }

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

    public static void testAnimal(Animal animal) {
        System.out.print(animal.getName() + "的叫声：");
        animal.makeSound();
    }
}