package com.zhu.map;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

interface Pet{
    
}
class Cat implements Pet{
    public String toString(){
        return "我是小貓";
    }
}
class Dog implements Pet{
    public String toString(){
        return "我是小狗";
    }
}
class Pig implements Pet{
    public String toString(){
        return "我是小豬";
    }
}
public class MapOfList {
    public static void main(String[] args) {
        Map<String,List<? extends Pet>>map=new HashMap<String,List<? extends Pet>>();
        map.put("張山", Arrays.asList(new Cat(),new Dog()));
        map.put("李四",Arrays.asList(new Dog(),new Pig()));
        map.put("王五",Arrays.asList(new Pig(),new Pig()));
        System.out.println("姓名："+map.keySet());
        System.out.println("寵物："+map.values());
        for(String name:map.keySet()){
            System.out.print(name+": ");
            for(Pet pet:map.get(name)){
                System.out.print(pet+"   ");
            }
            System.out.println("\n");
        }
    }
}