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public class AnimalTest {
public static void main(String[] args) {
// 多态:使用 Animal 类型引用指向子类对象
Animal dog = new Dog();
Animal cat = new Cat();
System.out.println("===== 测试动物叫声 =====");
dog.makeSound();
cat.makeSound();
System.out.println("\n===== 测试接口能力 =====");
// 使用 instanceof 检查对象是否实现了 Swimmable 接口
if (dog instanceof Swimmable) {
((Swimmable) dog).swim();
} else {
System.out.println("这个动物不会游泳");
}
if (cat instanceof Swimmable) {
((Swimmable) cat).swim();
} else {
System.out.println("这个动物不会游泳");
}
}
}