JAVA面向对象设计宠物类方式

package cn.cxy.exec;
public class Pet {
    String name;
    int full;
    int happy;
    public Pet(String name) {
        this(name, 50, 50);
    }
    public Pet(String name,int full,int happy) { 
        this.name = name;
        this.full = full;
        this.happy = happy;
    }
    public void feed() {//宠物的喂食方法
        if(full == 100) {
            System.out.println(name+"已经吃饱了");
            return;
        }
        System.out.println("给"+name+"喂食");
        full += 10;
        System.out.println("饱食度："+full);
    }
    public void play() {//宠物的互动玩耍方法
        if(full == 0) {
            System.out.println(name+"已经饿得玩不动了");
            return;
        }
        System.out.println("陪"+name+"玩耍");
        happy += 10;
        full -= 10;
        System.out.println("快乐度："+happy);
        System.out.println("饱食度："+full);
    }
    public void punish() {//宠物的惩罚方法
        //子类不同的代码，改成调方法
        System.out.println(
                "打"+name+"的pp，"+name+"哭叫："+cry());
        happy -= 10;
        System.out.println("快乐度："+happy);
    }
    public String cry() {//小动物被打哭了
        //无意义代码
        //cry()方法需要在子类中重写，返回具体哭叫声
        return "此处有哭叫声";
    }
}

package cn.cxy.exec;
public class Cat extends Pet{
    public Cat(String name, int full, int happy) {
        super(name, full, happy);
    }
    public Cat(String name) {
        super(name);
    }
    @Override
    public String cry() {
        return "喵~";
    }
}

package cn.cxy.exec;
public class Dog extends Pet {
    public Dog(String name, int full, int happy) {
        super(name, full, happy);
    }
    public Dog(String name) {
        super(name);
    }
    @Override
    public String cry() {
        return "汪~";
    }
}

package cn.cxy.exec;
 
import java.util.Random;
import java.util.Scanner;
 
public class TestPet {
    public static void main(String[] args) {
        System.out.println("1. 狗");
        System.out.println("2. 猫");
        System.out.print("选择：> ");
        int c = new Scanner(System.in).nextInt();
        System.out.print("给宠物起个名字：");
        String n = new Scanner(System.in).nextLine();
        //定义猫狗变量
        Dog dog = null;
        Cat cat = null;
        if(c == 1) {
            dog = new Dog(n);
            play(dog);
        } else {
            cat = new Cat(n);
            play(cat);
        }
    }
    private static void play(Dog dog) {
        System.out.println("按回车执行");
        while(true) {
            new Scanner(System.in).nextLine();
            int r = new Random().nextInt(6);
            switch(r) {
            case 0: dog.feed(); break;
            case 1: dog.play(); break;
            default: dog.punish(); break;
            }
        }
    }
    private static void play(Cat cat) {
        System.out.println("按回车执行");
        while(true) {
            new Scanner(System.in).nextLine();
            int r = new Random().nextInt(6);
            switch(r) {
            case 0: cat.feed(); break;
            case 1: cat.play(); break;
            default: cat.punish(); break;
            }
        }
    }
}