I'm new to BaseX and I'm trying to connect to a BaseX server initialized from my program
and later trying to connect to it

BaseXServer server = new BaseXServer();

ClientSession session = new ClientSession("localhost", 1984, "admin", "admin");

and shows to me this error

Exception in thread "main" .basex.server.LoginException: Access denied: admin.
    at .basex.api.client.ClientSession.<init>(ClientSession.java:123)
    at .basex.api.client.ClientSession.<init>(ClientSession.java:76)
    at TextBasexCrud.main(TextBasexCrud.java:39)

The thing is that when I try to start it from CMD or PowerShell, using the command basexserver, I don't have problem connecting to it from my program.

I've tried to find information about this but I haven't found it. I would really appreciate some help.

Here is my whole code:

import .basex.*;
import .basex.api.client.*;
import .basex.core.*;
import .basex.core.cmd.*;

import java.io.*;
import java.util.Scanner;

/**
 * Programa que implementa operaciones CRUD en una base de datos XML usando BaseX.
 * El programa pregunta al usuario el nombre de la base de datos y, si no existe, la crea.
 * Luego se ofrece un menú para realizar las operaciones:
 *   - Crear (insertar un nuevo registro)
 *   - Leer
 *   - Actualizar
 *   - Eliminar
 *
 * Nota: Al realizar la inserción, el usuario debe introducir una ruta XPath válida (por ejemplo, /books)
 * que indique en qué nodo se debe insertar el XML.
 */
public final class TextBasexCrud {

    private static Scanner scanner = new Scanner(System.in);

    public static void main(final String[] args) throws Exception {
        System.out.println("=== BaseX CRUD Operations ===");

        // Crear el contexto global
        final Context context = new Context();

        BaseXServer server = new BaseXServer();

        System.out.println("\n* Create a client session.");
        ClientSession session = new ClientSession("localhost", 1984, "admin", "admin");

            // Solicitar el nombre de la base de datos
            System.out.print("Enter the database name: ");
            String dbName = scanner.nextLine();

            // Verificar si la base de datos existe; si no, se crea
            if (!checkDatabaseExists(session, dbName)) {
                createDatabase(session, dbName);
            }

            // Menú de operaciones CRUD
            String operation;
            do {
                System.out.println("\nSelect operation:");
                System.out.println("1. Create Record");
                System.out.println("2. Read Records");
                System.out.println("3. Update Record");
                System.out.println("4. Delete Record");
                System.out.println("5. Exit");
                System.out.print("Enter choice (1-5): ");
                operation = scanner.nextLine();

                switch (operation) {
                    case "1":
                        createRecord(session, dbName);
                        break;
                    case "2":
                        readRecord(session, dbName);
                        break;
                    case "3":
                        updateRecord(session, dbName);
                        break;
                    case "4":
                        deleteRecord(session, dbName);
                        break;
                    case "5":
                        System.out.println("Exiting program.");
                        server.stop();
                        break;
                    default:
                        System.out.println("Invalid choice. Please try again.");
                }
            } while (!operation.equals("5"));

        context.close();
    }

    private static boolean checkDatabaseExists(ClientSession session, String dbName) {
        try {
            session.execute("OPEN " + dbName);
            System.out.println("Database '" + dbName + "' found.");
            return true;
        } catch (IOException e) {
            System.out.println("Database '" + dbName + "' not found.");
            return false;
        }
    }

    private static void createDatabase(ClientSession session, String dbName) throws IOException {
        System.out.println("Creating database '" + dbName + "'...");
        // XML de ejemplo: un contenedor "books" que almacenará documentos
        String xml = "<books><book><title>Sample Book</title><author>Sample Author</author></book></books>";
        session.execute("CREATE DB " + dbName + " " + '"' + xml + '"');
        System.out.println("Database '" + dbName + "' created successfully.");
    }

    private static void createRecord(ClientSession session, String dbName) {
        System.out.println("\nCreating a new record...");
        System.out.println("Enter XML to insert (e.g. <book><title>New Book</title></book>): ");
        String xml = scanner.nextLine();
        System.out.println("Enter the target XPath for insertion (e.g. /books or /books/book[1] before): ");
        String targetXPath = scanner.nextLine();

        // Construir el comando de actualización.
        // Nota: Es responsabilidad del usuario introducir una expresión XPath válida que seleccione EXACTAMENTE un nodo.
        // Se pueden usar las palabras clave 'into', 'before', 'after', 'as first into', etc.
        String command = "XQUERY insert nodes " + xml + " into " + targetXPath;

        try {
            session.execute(command);
            System.out.println("Record inserted successfully into database '" + dbName + "'.");
        } catch (IOException e) {
            System.out.println("Error during insert: " + e.getMessage());
        }
    }

    // Ejecuta una consulta XQuery para leer registros
    private static void readRecord(ClientSession session, String dbName) {
        System.out.println("\nReading records...");
        System.out.print("Enter XQuery to run (e.g. //book): ");
        String query = scanner.nextLine();
        try {
            String result = session.execute("XQUERY " + query);
            System.out.println("Query result:\n" + result);
        } catch (IOException e) {
            System.out.println("Error during read: " + e.getMessage());
        }
    }

    private static void updateRecord(ClientSession session, String dbName) {
        System.out.println("\nUpdating a record...");
        System.out.print("Enter XQuery update command (e.g. update replace //book[title='Old Book']/title with <title>New Title</title>): ");
        String updateQuery = scanner.nextLine();
        try {
            session.execute("XQUERY " + updateQuery);
            System.out.println("Record updated successfully.");
        } catch (IOException e) {
            System.out.println("Error during update: " + e.getMessage());
        }
    }

    private static void deleteRecord(ClientSession session, String dbName) {
        System.out.println("\nDeleting a record...");
        System.out.print("Enter XQuery delete command (e.g. delete //book[title='Old Book']): ");
        String deleteQuery = scanner.nextLine();
        try {
            session.execute("XQUERY " + deleteQuery);
            System.out.println("Record deleted successfully.");
        } catch (IOException e) {
            System.out.println("Error during delete: " + e.getMessage());
        }
    }
}

I'm using BaseX version 11.7 and here is my POM

<project xmlns=".0.0"
         xmlns:xsi=";
         xsi:schemaLocation=".0.0 .0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cat.fxp</groupId>
    <artifactId>basex-crud-fx</artifactId>
    <version>1.0-SNAPSHOT</version>

    <repositories>
        <repository>
            <id>basex</id>
            <name>BaseX Maven Repository</name>
            <url>;/url>
        </repository>
    </repositories>

    <properties>
        <mavenpiler.source>11</mavenpiler.source>
        <mavenpiler.target>11</mavenpiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- Última versión estable -->
    </properties>

    <dependencies>
        <dependency>
            <groupId>.basex</groupId>
            <artifactId>basex</artifactId>
            <version>11.7</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.11.0</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

I tried to put a Thread.sleep(10000) after starting it, but it didn't work. Maybe creating it from the program uses other credentials, I don't really know.