Пример бота на Java#

public class FullStartScene extends Scene {
    @Override
    public State processIncomingMessage(MessageWebhook incomingMessage, State currentState) {

        var greetingText =
            """
                Please, choose Scene's method and I execute it. 

                1. answerWithText();
                2. answerWithUrlFile();
                3. answerWithPoll();
                4. answerWithLocation();
                5. answerWithContact();
                6. Exit.
                """;

        var resp = answerWithText(incomingMessage, greetingText, "/start");
        if (resp == null) {
            var sendMessageResp = answerWithText(incomingMessage, "Hi, this is test bot.\nPlease, send me a command - /start");

            return currentState;
        }

        return activateNextScene(currentState, new ChooseScene());
    }
}

public class ChooseScene extends Scene {

    @Override
    public State processIncomingMessage(MessageWebhook incomingMessage, State currentState) {

        if (Filter.isMessageTextExpected(incomingMessage, "1")) {
            answerWithText(incomingMessage, "Hi! This is answerWithText!");

            return currentState;

        } else if (Filter.isMessageTextExpected(incomingMessage, "2")) {
            answerWithText(incomingMessage, "Send me the link on File:");

            return activateNextScene(currentState, new InputLinkScene());

        } else if (Filter.isMessageTextExpected(incomingMessage, "3")) {
            var options = new ArrayList<Option>();
            options.add(new Option("Red"));
            options.add(new Option("Blue"));
            options.add(new Option("Green"));
            options.add(new Option("Pink"));

            answerWithPoll(incomingMessage, "choose color", options, false);

            return currentState;

        } else if (Filter.isMessageTextExpected(incomingMessage, "4")) {
            answerWithLocation(incomingMessage, "Home", "Cdad. de La Paz 2969, Buenos Aires", -34.5553558, -58.4642510);

            return currentState;

        } else if (Filter.isMessageTextExpected(incomingMessage, "5")) {
            var contact = Contact.builder()
                .firstName("first")
                .lastName("last")
                .middleName("middle")
                .company("Green API")
                .phoneContact(11111111111L)
                .build();

            answerWithContact(incomingMessage, contact);

            return currentState;

        } else if (Filter.isMessageTextExpected(incomingMessage, "6")) {
            answerWithText(incomingMessage, "Goodbye!");

            return activateStartScene(currentState);
        }

        answerWithText(incomingMessage, "Please send numbers - 1, 2, 3, 4, 5 or 6");

        return currentState;
    }
}

public class InputLinkScene extends Scene {
    @Override
    public State processIncomingMessage(MessageWebhook incomingMessage, State currentState) {
        var fileUrl = getText(incomingMessage);

        if (fileUrl != null) {
            try {
                answerWithUrlFile(incomingMessage, "This is your file!", fileUrl, "testFile");
            } catch (Exception e) {
                answerWithText(incomingMessage, "invalid link! Please send me a link, for example https://greenapi.com");
            }
        } else {
            answerWithText(incomingMessage, "Please send me a link!");

            return currentState;
        }

        return activateNextScene(currentState, new ChooseScene());
    }
}