java - How to count key values in a HashMap -

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i writing game , i'm stuck..

we have 2 teams

public enum teamtype {    team_one,    team_two; }  private optional<teamtype> team;

and hashmap

private map<teamtype, player> teamplayers = new hashmap<>();

how count amount of players within team type? (returning numeric value) 

teamplayers.get(teamtype.zamorak).size();

is not possible.

if list of players:

private map<teamtype, list<player>> teamplayers = new hashmap<>();

this work:

teamplayers.get(teamtype.team_one).size();

of course you'd need initialize empty player list:

teamplayers.put(teamtype.team_one, new arraylist<player>()); teamplayers.put(teamtype.team_two, new arraylist<player>());

then add players team:

teamplayers.get(teamtype.team_one).add(new player());

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