NfcAdapter nfcAdapter = new NfcAdapter();
        nfcAdapter.registerTagListener(new Type2NfcTagListener(new NdefWriter()));
        nfcAdapter.registerUnknownTagListerner(new LoggingUnknownTagListener());
        nfcAdapter.setTerminal(TerminalUtils.getAvailableTerminal());

Actually it's so easy in using Mifare Classic tags, but this UL is so much different in its way of implementing.