Java中继承和组合的区别

/**
 * 动物
 */
public class Animal {
    public void breathing() {
        System.out.println("呼气...吸气...");
    }
}

/**
 * 飞行动物
 * 继承
 */
public class FlyingAnimals extends Animal{
    public void filying() {
        System.out.println("飞行...");
    }
    public static void main(String[] args) {
        FlyingAnimals flyingAnimals = new FlyingAnimals();
        flyingAnimals.breathing();
        flyingAnimals.filying();
    }
}

/**
 * 动物
 */
public class Animal {
    public void breathing() {
        System.out.println("呼气...吸气...");
    }
}

/**
 * 爬行动物
 * 组合
 */
public class Reptilia {
    private Animal animal;
    public Reptilia(Animal animal) {
        this.animal = animal;
    }
    public void crawling() {
        System.out.println("爬行...");
    }
    public void breathing() {
        animal.breathing();
    }
    public static void main(String[] args) {
        Animal animal = new Animal();
        Reptilia reptilia = new Reptilia(animal);
        reptilia.breathing();;
        reptilia.crawling();
    }
}

/**
 * 轮胎
 */
class Tire {
    public void run() {
        System.out.println("轮胎转动...");
    }
}
/**
 * 车灯
 */
class Light {
    public void light() {
        System.out.println("灯亮...");
    }
}

/**
 * 交通工具
 * 组合
 */
public class Vehicle {
    private Tire tire;
    private Light light;
    public Vehicle(Tire tire,Light light) {
        this.tire = tire;
        this.light = light;
    }
    public void operation() {
        light.light();
        tire.run();
    }
    public static void main(String[] args) {
        Tire tire = new Tire();
        Light light = new Light();
        Vehicle vehicle = new Vehicle(tire,light);
        vehicle.operation();
    }
}