java 使用hashmap一个键对应多值的方法

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class test2 {
	public static void main(String[] args) {
		 Map<Integer,List<String>> levelmap=new HashMap<Integer,List<String>>();
		 List<String> putlist=new ArrayList<>();
		 putlist.add("多个值1");
		 putlist.add("多个值2");
		 putlist.add("多个值3");
		 
		for (int i=0;i<5;i++){
			levelmap.put(i, putlist);
		}
		
		//打印levemap的值
		for (Entry<Integer, List<String>> in: levelmap.entrySet()){
			System.out.println("key===  "+in.getKey()+"     values=  "+in.getValue());
		}
	}
}