java/w6/AnimalTest.java

package com.rental.animal;

public class AnimalTest {
    public static void main(String[] args) {
        System.out.println("===== 多态测试 =====\n");
        
        Animal dog = new Dog("旺财");
        Animal cat = new Cat("小白");
        
        System.out.println("测试 makeSound 方法（多态调用）：");
        dog.makeSound();
        cat.makeSound();
        
        System.out.println("\n===== 测试游泳能力 =====\n");
        
        if (dog instanceof Swimmable) {
            ((Swimmable) dog).swim();
        }
        
        if (cat instanceof Swimmable) {
            ((Swimmable) cat).swim();
        } else {
            System.out.println(cat.getName() + "不会游泳");
        }
        
        System.out.println("\n===== 动物数组测试 =====\n");
        
        Animal[] animals = {new Dog("大黄"), new Cat("小花"), new Dog("黑子")};
        for (Animal animal : animals) {
            animal.makeSound();
            if (animal instanceof Swimmable) {
                ((Swimmable) animal).swim();
            }
        }
    }
}