public class GMCheck extends JavaPlugin{
    //Booleans
    Boolean Done1 = false;
    Boolean Done2 = false;
    Boolean Done3 = false;
    //Chat color
    ChatColor RED = ChatColor.RED;
    ChatColor AQUA = ChatColor.AQUA;
    ChatColor PURPLE = ChatColor.LIGHT_PURPLE;

    //commands

    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
        Player player = (Player) sender;
        String name = player.getDisplayName();
        World world = player.getWorld();
        String WorldName = world.getName();}
        if(cmd.getName().equalsIgnoreCase("gms")) {
            if (player.hasPermission("gms.use")) {
                String gmMSG = null;

                if(player.getGameMode() == GameMode.CREATIVE && Done2 == false){
                    gmMSG = "SURVIVAL";
                    player.setGameMode(GameMode.SURVIVAL);
                    Done2 = true;
                }
                if(player.getGameMode() == GameMode.SURVIVAL && Done2 == false){
                    gmMSG = "CREATIVE";
                    player.setGameMode(GameMode.CREATIVE);
                    Done2 = true;
                }
                if(player.getGameMode() == GameMode.ADVENTURE && Done2 == false) {
                    sender.sendMessage(RED + "You must be in either creative or survival!");
                    Done2 = true;
                }
                if (gmMSG != null) {
                    sender.sendMessage(AQUA + "Your gamemode was set to " + PURPLE + gmMSG + AQUA + " mode!");
                    getLogger().info("User " + name + " has set gamemode to " + gmMSG + " mode!");
                }
                Done2 = false;
            }
            else {
                sender.sendMessage(ChatColor.RED + "You don't have permission gms.use! Contact the server owner!");
            }
        }
    }
}