Why does this error appear?

Question

Java

Did telegram bota'a according to the documentation ( https://github.com/rubenlagus/TelegramBots/wiki/Ge... )
Errors pop up:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject .internal.cglib.core.$ReflectUtils$1 (file:/C:/Users/Vladp/.m2/repository/com/google/inject/guice/4.2.2/guice-4.2.2.jar) to method java. lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils $1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Here is the java and xml code:

import org.telegram.telegrambots.ApiContextInitializer;
import org.telegram.telegrambots.bots.TelegramLongPollingBot;
import org.telegram.telegrambots.meta.TelegramBotsApi;
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 Bot extends TelegramLongPollingBot {
    public static void main (String[] args) {
        ApiContextInitializer.init();
        TelegramBotsApi botsApi = new TelegramBotsApi();
        try {
            botsApi.registerBot(new Bot());
        } catch (TelegramApiException e) {
            e.printStackTrace();
        }

    }
    @Override
    public void onUpdateReceived(Update update) {
        if (update.hasMessage() && update.getMessage().hasText()) {
            SendMessage message = new SendMessage() // Create a SendMessage object with mandatory fields
                    .setChatId(update.getMessage().getChatId())
                    .setText(update.getMessage().getText());
            try {
                execute(message); // Call method to send the message
            } catch (TelegramApiException e) {
                e.printStackTrace();
            }
        }
    }
    @Override
    public String getBotUsername() {
        return "BotTotCampot_bot";
    }

    @Override
    public String getBotToken() {
        return "Тут мой токен";
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>telebot</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>7</source>
                    <target>7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.telegram</groupId>
            <artifactId>telegrambots</artifactId>
            <version>4.9.1</version>
        </dependency>


        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.7.13</version>
        </dependency>
    </dependencies>

</project>

Answer 1

These are not errors, but warnings. They will not affect the operation of your program in any way.
In case you're wondering what the warnings are about, in short - the library you're using uses another library under the hood - Guice. This Guice is accessing the JDK internal API, the JDK issues a warning in response to such an invasion of its personal boundaries.