byte[] encodedPasw = Base64.getEncoder().encode("tavo passw".getBytes());
        final String authUser = "aisteb";
        final String authPassword = new String(encodedPasw);

        Authenticator.setDefault(
                new Authenticator() {
                    @Override
                    public PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(
                                authUser, authPassword.toCharArray());
                    }
                }
        );