How to get PlayerType using enum

Hello, I need advice on how to get a player type using enum. I am trying to make 3 groups for players (BRONZE) (IRON) (GOLD). I wanted to do this using enum PlayerType and a switch (or is there a better solution?). Each time a player would join that group I would gain value based on that. For example, the player "Player" is PlayerType BRONZE.

PlayerType class

Code:

public enum PlayerType {
BRONZE, IRON, GOLD
}

PlayerManager class

Code:

private final Bronze bronzes = Bronze.getInstance();
private final Iron irons = Iron.getInstance();
private final Gold golds= Gold.getInstance();

public void setPlayerType(Player player, PlayerType playerType) {
switch(playerType) {
case BRONZE:
bronzes.addPlayer(player);
irons.removePlayer(player);
golds.removePlayer(player);
break;
case IRON:
irons.addPlayer(player);
bronzes.removePlayer(player);
golds.removePlayer(player);
break;
case GOLD:
golds.addPlayer(player);
irons.removePlayer(player);
bronzes.removePlayer(player);
break;
}
}

public boolean getPlayerType(Player player, PlayerType playerType) {
?? Now how can I return the value in which group the given player is?
return false;
}

 

I am using HashSets to store the UUIDs of the players. This is what addPlayer(player) is used for.

Code:

private Set<UUID> bronzes = new HashSet<>();

addPlayer(Player player) {
bronzes.add(player.getUniqueId());
}

 

Ohh, that's right. So something like that?

Code:

private final HashMap<UUID, PlayerType> playerList = new HashMap<>();

public void setPlayerType(Player player, PlayerType playerType) {
playerList.put(player.getUniqueId(), playerType);
}

public boolean getPlayerType(Player player, PlayerType playerType) {

}

And how can I use getPlayerType to get the individual player type and send a message to it? For example, if the player is a BRONZE, send him a message. So that I can access it from other classes like:

Code:

if (playerManager.getPlayerType(player.getUniqueId(), PlayerType.BRONZE)) { 
player.sendMessage("");

 

Do you mean it like this? So if the value is for example BRONZE it will return true.

Code:

public boolean getPlayerType(Player player, PlayerType playerType) {
return playerList.get(player.getUniqueId()) == playerType;
}

 

So:

Code:

public PlayerType getPlayerType(Player player) {
return playerList.get(player.getUniqueId());
}

Code:

if (playerManager.getPlayerType(player) == PlayerType.BRONZE)
//do something

 

When I tried to send to the player ActionBar it shows me an error:
Caused by: java.lang.NullPointerException: Cannot invoke "me.MDEV.Plugin.PlayerManager.getPlayerType(org.bukkit.entity.Player)" because "this .playerManager" is null

Here is the code:

PlayerManager

Code:

private static final PlayerManager instance = new PlayerManager();
    private final HashMap<UUID, PlayerType> playerList = new HashMap<>();
    ActionBar actionBar = ActionBar.getInstance();

    public static PlayerManager getInstance() {
        return instance;
    }

public void setPlayerType(Player player, PlayerType playerType) {
        playerList.put(player.getUniqueId(), playerType);
        actionBar.create(player);
    }

ActionBar

Code:

private static final ActionBar instance = new ActionBar();
PlayerManager playerManager = PlayerManager.getInstance();

public static ActionBar getInstance() {
return instance;
}

if (playerManager.getPlayerType(player) == PlayerType.BRONZE)
                player.spigot().sendMessage(ChatMessageType.ACTION_BAR,
                        TextComponent.fromLegacyText("BRONZE PLAYER");

Why is playerManager null?