telegram button response not getting

[parvezhossainme]

import org.telegram.telegrambots.bots.TelegramLongPollingBot;
import org.telegram.telegrambots.meta.api.methods.send.SendMessage;
import org.telegram.telegrambots.meta.api.objects.Update;
import org.telegram.telegrambots.meta.api.objects.replykeyboard.InlineKeyboardMarkup;
import org.telegram.telegrambots.meta.api.objects.replykeyboard.buttons.InlineKeyboardButton;
import org.telegram.telegrambots.meta.exceptions.TelegramApiException;
import java.util.ArrayList;
import java.util.List;

public class Responder extends TelegramLongPollingBot {

@Override
public void onUpdateReceived(Update update) {
    String response = "Hello I am Parvez. Nice to meet you.Please write in English";
    //String chatId;---is wrong
    String chatId = "";
    SendMessage sendMessage = new SendMessage();
    sendMessage.setText(response);


    if (update.hasCallbackQuery() && update.getCallbackQuery().getData() != null && !update.getCallbackQuery().getData().isEmpty()) {
        chatId = String.valueOf(update.getMessage().getChatId());
        String callbackdata = update.getCallbackQuery().getData();
        if (callbackdata.equalsIgnoreCase("/YES")) {
            sendMessage.setText("ALL WORKING");
        }
    }

    if (update.hasMessage() && update.getMessage().hasText()) {
        chatId = String.valueOf(update.getMessage().getChatId());
        String usermessage = update.getMessage().getText().trim();

        if (usermessage.contains("time")) {
            chatId = String.valueOf(update.getMessage().getChatId());
            sendMessage.setText("Would you like to know the current time?");

            List<List<InlineKeyboardButton>> keyboard = new ArrayList<>();
            List<InlineKeyboardButton> buttonRow = new ArrayList<>();

            InlineKeyboardButton yesbutton = new InlineKeyboardButton();
            yesbutton.setText("Yes?");
            yesbutton.setCallbackData("/YES");
            buttonRow.add(yesbutton);
            keyboard.add(buttonRow);
            InlineKeyboardMarkup inlineKeyboardMarkup = new InlineKeyboardMarkup();
            inlineKeyboardMarkup.setKeyboard(keyboard);
            sendMessage.setReplyMarkup(inlineKeyboardMarkup);
        }
    }
    if (chatId.isEmpty()) {
        throw new IllegalStateException("the chat id could not be found");
    }
    sendMessage.setChatId(chatId);

    try {
        sendApiMethod(sendMessage);
    } catch (TelegramApiException e) {
        throw new RuntimeException(e);
    }
}

@Override
public String getBotUsername() {
    return Bot.USERNAME;
}

@Override
public String getBotToken() {
    return Bot.BOT_TOKEN;
}

}

[parvezhossainme]

Solved