不积跬步，无以至千里；不积小流，无以成江海。
Java语言基础
Java的多态（接口/抽象类）
1.构建一个食物抽象类，Bone和Fish分别为其实现类，通过super传参。
2.构建一个动物类，对于Dog类和Cat类，分别使用多态，使food父类引用实现子类方法。
3.构建饲养员类，分别传入Food类和Animal类，多态的应用。
abstract class Animal {
String name;
public Animal(String name) {
this.name = name;
}
public String name() {
return name;
}
public abstract void eat(Food food);
}
abstract class Food {
String name;
public Food(String name) {
// TODO Auto-generated constructor stub
this.name = name;
}
public String getname() {
return name;
}
}
class Dog extends Animal {
public Dog(String name) {
super(name);
// TODO Auto-generated constructor stub
}
@Override
public void eat(Food food) {
// TODO Auto-generated method stub
System.out.println(this.name + " likes eating: " + food.getname());
}
}
class Cat extends Animal {
public Cat(String name) {
super(name);
// TODO Auto-generated constructor stub
}
@Override
public void eat(Food food) {
// TODO Auto-generated method stub
System.out.println(this.name + " likes eating: " + food.getname());
}
}
class Bone extends Food {
public Bone(String name) {
super(name);
}
}
class Fish extends Food {
public Fish(String name) {
super(name);
}
}
class feeder {
public void feedanimal(Animal animal, Food food) {
animal.eat(food);
}
}
public class Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
feeder f = new feeder();
Animal an = new Dog("Dog");
Animal cat = new Cat("Cat");
Food fo = new Bone("骨头");
Food fi = new Fish("鱼");
f.feedanimal(an, fo);
f.feedanimal(cat, fi);
}
}
程序输出：
Dog likes eating: 骨头 Cat likes eating: 鱼
博客借鉴：https://www.cnblogs.com/summerdata/p/10786767.html
