今日报告

[实验任务一]：双向适配器

实现一个双向适配器，使得猫可以学狗叫，狗可以学猫抓老鼠。

Animal.java

// 动物接口
interface Animal {
    void makeSound();
    void catchMouse();
}

AnimalAdapter.java

// 双向适配器
class AnimalAdapter implements Animal {
    private Animal animal;

    public AnimalAdapter(Animal animal) {
        this.animal = animal;
    }

    @Override
    public void makeSound() {
        animal.makeSound();
    }

    @Override
    public void catchMouse() {
        animal.catchMouse();
    }
}

　　

Cat.java

// 猫类
class Cat implements Animal {
    @Override
    public void makeSound() {
        System.out.println("猫叫：喵喵喵");
    }

    @Override
    public void catchMouse() {
        System.out.println("猫抓老鼠");
    }
}

Dog.java

// 狗类
class Dog implements Animal {
    @Override
    public void makeSound() {
        System.out.println("狗叫：汪汪汪");
    }

    @Override
    public void catchMouse() {
        System.out.println("狗学会了猫抓老鼠");
    }
}

Main.java

// 测试代码
public class Main {
    public static void main(String[] args) {
        Cat cat = new Cat();
        Dog dog = new Dog();

        // 猫变成狗
        Animal dogAdapter = new AnimalAdapter(cat);
        dogAdapter.makeSound();  // 输出：猫叫：喵喵喵
        dogAdapter.catchMouse(); // 输出：猫抓老鼠

        // 狗变成猫
        Animal catAdapter = new AnimalAdapter(dog);
        catAdapter.makeSound();  // 输出：狗叫：汪汪汪
        catAdapter.catchMouse(); // 输出：狗学会了猫抓老鼠
    }
}

类图