public class joinCommand implements CommandExecutor {

    Main plugin;
    Game game;

    public joinCommand(Main plugin) { this.plugin = plugin; }

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
    Player player = (Player) sender;
        if(sender == null) {
            plugin.console.sendMessage(ChatColor.RED + "" + ChatColor.BOLD + "(!)" + ChatColor.RED + "Only players can execute this command.");
        }

        if (player != null) {
            if(plugin.ingame.contains(player.getUniqueId())) {
                player.sendMessage("You are already in a match. Type /blleave to leave.");
            }
            else if(!plugin.ingame.contains(player.getUniqueId())) {
                player.sendMessage("Sending you to BlockIn Practice!");

                if(player.equals(null)) {
                    player.sendMessage("null");
                    plugin.console.sendMessage("null (joincmd)");
                }
                game.GameAdd(null);


            }
        }


        return false;
    }
}