ХЕЛП!!

package com.javarush.task.task08.task0816; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Locale; import java.util.Map; import java.util.*; /* Добрая Зинаида и летние каникулы */ public class Solution { public static HashMap<String, Date> createMap() throws ParseException { DateFormat df = new SimpleDateFormat("MMMMM d yyyy", Locale.ENGLISH); HashMap<String, Date> map = new HashMap<String, Date>(); map.put("Stallone", df.parse("JUNE 1 1980")); map.put("b", df.parse("AUGUST 1 1500")); map.put("c", df.parse("JULY 1 1800")); map.put("d", df.parse("JUNE 1 1600")); map.put("e", df.parse("JULY 1 1200")); map.put("f", df.parse("AUGUST 1 1991")); map.put("g", df.parse("SEPTEMBER 1 1000")); map.put("h", df.parse("MARCH 1 1750")); map.put("i", df.parse("DECEMBER 1 1777")); map.put("j", df.parse("MAY 1 1313")); return map; } public static void removeAllSummerPeople(HashMap<String, Date> map) { HashMap<String,Date> mapCopy = new HashMap<>(map); for (HashMap.Entry<String, Date> pair: mapCopy.entrySet()){ Date value = pair.getValue(); if (value.getMonth() > 5 && value.getMonth() < 9){ map.remove(pair.getKey()); } } } public static void main(String[] args){ //HashMap<String, Date> map = createMap(); //removeAllSummerPeople(map); } }