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26 lines
477 B
26 lines
477 B
abstract class Animal {
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public abstract void makeSound();
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}
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interface Swimmable {
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void swim();
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}
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class Dog extends Animal implements Swimmable {
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@Override
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public void makeSound() {
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System.out.println("汪汪汪！");
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}
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@Override
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public void swim() {
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System.out.println("小狗在水里游泳！");
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}
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}
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class Cat extends Animal {
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@Override
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public void makeSound() {
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System.out.println("喵喵喵！");
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}
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}
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