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24 lines
523 B

package Animal;
public abstract class Animal {
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("小狗正在游泳...");
}
}
class Cat extends Animal{
@Override
public void makeSound(){
System.out.println("喵喵喵————");
}
}