Day_08【面向对象】扩展案例4_年龄为30岁的老王养了一只黑颜色的2岁的宠物……

#分析以下需求,并用代码实现：

•   1.定义动物类
    属性：
    	年龄，颜色
    行为:
    	eat(String something)方法(无具体行为,不同动物吃的方式和东西不一样,something表示吃的东西)
    	生成空参有参构造，set和get方法
  

•   2.定义狗类继承动物类	  
    行为:
    	eat(String something)方法,看家lookHome方法(无参数)
  

•   3.定义猫类继承动物类
    行为:eat(String something)方法,逮老鼠catchMouse方法(无参数)
  

•   4.定义Person类
    属性：
    	姓名，年龄
    行为：
    	keepPet(Dog dog,String something)方法
    		功能：喂养宠物狗，something表示喂养的东西
    行为：
    	keepPet(Cat cat,String something)方法
    		功能：喂养宠物猫，something表示喂养的东西
    生成空参有参构造，set和get方法  
  

•   5.定义测试类(完成以下打印效果):
  
    keepPet(Dog dog,String somethind)方法打印内容如下：
    	年龄为30岁的老王养了一只黑颜色的2岁的宠物
    	2岁的黑颜色的狗两只前腿死死的抱住骨头猛吃
  
    keepPet(Cat cat,String somethind)方法打印内容如下：
    	年龄为25岁的老李养了一只灰颜色的3岁的宠物
    	3岁的灰颜色的猫眯着眼睛侧着头吃鱼
  

  #我的分析

  •   猫类：颜色,年龄,吃东西(鱼){},抓老鼠(){}
      狗类：颜色,年龄,吃东西(骨头){},看家(){}
    
      人类：姓名,年龄,喂狗(){},喂猫(){}
    
      猫狗有共性，提取一个父类(Pet)
      抽象宠物类:
      	颜色,年龄,食物,吃东西(食物);
      	猫类：继承宠物类
      	狗类：继承宠物类
    

package com.itheima6;
//抽象宠物类
public abstract class Pet {
	private String color;
	private int age;
	
	public Pet() {}
	
	public Pet(String color,int age) {
		this.color = color;
		this.age = age;
	}

	public String getColor() {
		return color;
	}

	public void setColor(String color) {
		this.color = color;
	}

	public int getAge() { 
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}
	
	public abstract void eat(String food);

}

package com.itheima6;
//猫类
public class Cat extends Pet{
	
	public Cat() {}
	
	public Cat(String color,int age) {
		super(color,age);
	}

	@Override
	public void eat(String food) {
		// TODO Auto-generated method stub
		System.out.println(this.getAge()+"岁的"+this.getColor()+"颜色的"+"猫眯着眼睛侧着头吃"+food);
	}
	
	public void catchMouse() {
		System.out.println("猫抓老鼠");
	}

}

package com.itheima6;

//狗类
public class Dog extends Pet {

	public Dog() {
	}

	public Dog(String color, int age) {
		super(color, age);
	}

	@Override
	public void eat(String food) {
		// TODO Auto-generated method stub
		System.out.println(this.getAge() + "岁的" + this.getColor() + "颜色的" + "狗两只前腿死死地抱住" + food + "猛吃");
	}

	public void lookHome() {
		System.out.println("狗看门");
	}
}

package com.itheima6;

//人类
public class Person {
	private String name;
	private int age;

	public Person() {
	}

	public Person(String name, int age) {
		this.name = name;
		this.age = age;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public void keepPet(Pet p, String food) {
		if (p instanceof Dog) {
			Dog d = (Dog) p;
			System.out.println("年龄为" + age + "岁的" + name + "养了一只" + d.getColor() + "颜色的" + d.getAge() + "岁的宠物");
			d.eat(food);
		} else if (p instanceof Cat) {
			Cat c = (Cat) p;
			System.out.println("年龄为" + age + "岁的" + name + "养了一只" + c.getColor() + "颜色的" + c.getAge() + "岁的宠物");
			c.eat(food);
		}
	}

}

package com.itheima6;

public class Test {
	public static void main(String[] args) {

		Dog d = new Dog("黑", 2);
		Person p2 = new Person("老王", 30);
		p2.keepPet(d, "骨头");

		Cat c = new Cat("灰", 3);
		Person p = new Person("老李", 25);
		p.keepPet(c, "鱼");
	}

}

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