public void doAsyncQuery(final CallBack<HashMap> callBack, final Player p) {
        Bukkit.getScheduler().runTaskAsynchronously(plugin, new Runnable() {
            @Override
            public void run() {
                final HashMap<String, String> result = new HashMap<String, String>();

                result.put("test", "data1");
                result.put("test1", "data2");

                Bukkit.getScheduler().runTask(plugin, new Runnable() {
                    @Override
                    public void run() {
                        @Override
                        public void run() {
                            callBack.onSuccess(result);
                        }
                    }
                });
            }
        });
    }

    public interface CallBack<T> {
        void onSuccess(T done);
        void onFailure(Throwable cause);
    }

    doAsyncQuery(new CallBack<HashMap>() {

        @Override
        public void onSuccess(HashMap done) {
            System.out.println(done.get("test"));
            System.out.println(done.get("test2"));
        }

        @Override
        public void onFailure(Throwable cause) {
            System.out.println("ERROR: LOADING ASYNC MYSQL DATA");
        }

    }, p);