Main.java

package org.example;

import org.telegram.telegrambots.meta.TelegramBotsApi;
import org.telegram.telegrambots.updatesreceivers.DefaultBotSession;

public class Main {
    public static void main(String[] args) throws Exception {
        var api = new TelegramBotsApi(DefaultBotSession.class);
        api.registerBot(new MyBot());
    }
}

MyBot.java

package org.example;

import net.thauvin.erik.crypto.CryptoPrice;
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.exceptions.TelegramApiException;

public class MyBot extends TelegramLongPollingBot {
    public MyBot() {
        super("тут ваш токен, що зренерував для вас BotFather");
    }

    @Override
    public void onUpdateReceived(Update update) {
        var chatId = update.getMessage().getChatId();
        var text = update.getMessage().getText();

        try {
            var message = new SendMessage();
            message.setChatId(chatId);

            if (text.equals("/start")) {
                message.setText("Hello!");
            } else if (text.equals("btc")) {
                var price = CryptoPrice.spotPrice("BTC");
                message.setText("BTC price: " + price.getAmount().doubleValue());
            } else if (text.equals("eth")) {
                var price = CryptoPrice.spotPrice("ETH");
                message.setText("ETH price: " + price.getAmount().doubleValue());
            } else {
                message.setText("Unknown command!");
            }

            execute(message);
        } catch (Exception e) {
            System.out.println("Error!");
        }
    }

    @Override
    public String getBotUsername() {
        return "тут ваше ім'я бота";
    }
}

pom.xml

<dependencies>
        <dependency>
            <groupId>net.thauvin.erik</groupId>
            <artifactId>cryptoprice</artifactId>
            <version>1.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.telegram</groupId>
            <artifactId>telegrambots</artifactId>
            <version>6.5.0</version>
        </dependency>
    </dependencies>