Task

public class Task implements CommandExecutor {
    Team team = new Team();

    public boolean onCommand(final CommandSender commandSender, Command command, String s, final String[] strings) {
        if(command.getName().equalsIgnoreCase("task")){
            if(commandSender.hasPermission("task")){
                if(strings.length > 0){
                    if (strings[0].equalsIgnoreCase("open")) {
                        final BukkitRunnable runnable = new BukkitRunnable() {
                            public void run() {
                                int time = 3;
                                time--;
                                if (time == 2) {
                                    team.showP.removeAll(null);
                                    team.hideP.removeAll(null);
                                    team.name.removeAll(null);
                                    team.open.removeAll(null);
                                }
                                if (time == 1) {
                                    team.name.add(strings[1].replace("_", " ").replace("&", "§"));
                                    team.open.add((Player) commandSender);
                                }
                                if (time == 0) {
                                    this.cancel();
                                }
                            }
                        };
                        runnable.run();
                    }

                    if (strings[0].equalsIgnoreCase("remove")){
                        team.showP.removeAll(null);
                        team.hideP.add((Player) Bukkit.getOnlinePlayers());
                        team.name.removeAll(null);
                        team.open.removeAll(null);
                    }

                    if (strings[0].equalsIgnoreCase("getHide")){
                        commandSender.sendMessage(((Player) team.hideP).getDisplayName());
                    }

                    if (strings[0].equalsIgnoreCase("getShow")){
                        commandSender.sendMessage(((Player) team.showP).getDisplayName());
                    }

                    if (strings[0].equalsIgnoreCase("getOpen")){
                        commandSender.sendMessage(((Player) team.open).getDisplayName());
                    }

                    if (strings[0].equalsIgnoreCase("getName")){
                        commandSender.sendMessage(team.name.toString());
                    }
                } else {
                    commandSender.sendMessage("send error permission");
                    return true;
                }
            }
        }
        return false;
    }
}