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39 lines
739 B
39 lines
739 B
package w6;
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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("狗会游泳");
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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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public class Test{
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public static void main(String[] args) {
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Animal dog = new Dog();
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dog.makeSound();
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((Swimmable) dog).swim();
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Animal cat = new Cat();
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cat.makeSound();
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}
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}
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}
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