Hello guys! I was able to solve this task by using just an old fashioned 'if' and 'while' loop but I was thinking about approaching this issue differently but couldn't make it work. Could you please help me figure out what I should change in my code here to make it work and solve this task 0816 using Streams API? Thanks in advance :)
public static void removeAllSummerPeople(HashMap<String, Date> map) {
     Iterator<Map.Entry<String, Date>> iter = map.entrySet().iterator();
     Calendar cal = new GregorianCalendar();

     while (iter.hasNext()) {
         Map.Entry<String, Date> entry = iter.next();

          map.entrySet().removeIf(v -> v.getValue().getTime() == Calendar.JUNE
                                 || v.getValue().getTime() == Calendar.JULY
                                 || v.getValue().getTime() == Calendar.AUGUST);
I tried also another approach similar to my 'original' solution but without any luck:
map.entrySet().removeIf(v -> cal.get(Calendar.MONTH) == Calendar.JUNE
                                    || cal.get(Calendar.MONTH) == Calendar.JULY
                                    || cal.get(Calendar.MONTH) == Calendar.AUGUST);
I haven't mastered streams in Java yet so any help and any hints you might have are appreciated!