Connect Java with SQL Server 2017 in Eclipse Oxygen

I am using Eclipse Oxygen to develop a Java program and I want to use SQL Server 2017 to save the information. I read in other places how to do it, but, it does not work for me.

Steps I've done so far:

• I downloaded the Microsoft JDBC Driver 6.0 for SQL Server .
• I added it to my project in Eclipse Oxygen.
• I added the Driver in the Java Build Path of my project.
• I have my database created using SQL Server Management Studio v17.3.
• In SQL Server Network Configuration, I have TCP / IP and Named Pipes activated.
• In Windows Defender Firewall, I have port 1433 open.

The code I have is:

public class ConexionSQL {

    // Librería de SQL
    public String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

    // Nombre de la base de datos
    public String database = "industriaCine";

    // Host
    public String hostname = "localhost";

    // Puerto predeterminado para SQL Server
    public String port = "1433";

    // Ruta de nuestra base de datos ("integratedSecurity=true" establece que usaremos la autenticación integrada de Windows)
    public String url = "jdbc:sqlserver://" + hostname + ";databaseName=" + database + ";integratedSecurity=true";

    public Connection conectarSQL() {
        Connection conn = null;

        try {
            Class.forName(driver);
            conn = DriverManager.getConnection(url);
        } catch (ClassNotFoundException | SQLException e) {
            JOptionPane.showMessageDialog(null, "SQLException:\n" + e, "Error: conectarSQL()", JOptionPane.ERROR_MESSAGE);
        }

        return conn;
    }
}

In Eclipse I receive these errors in the console:

  

Nov 05, 2017 9:33:23 AM com.microsoft.sqlserver.jdbc.AuthenticationJNI    WARNING: Failed to load the sqljdbc_auth.dll cause: no   sqljdbc_auth in java.library.path

     

com.microsoft.sqlserver.jdbc.SQLServerException: This driver is not   configured for integrated authentication.   ClientConnectionid: fe7aa3ab-3308-4602-9918-ef166b69118

What is missing in order to connect to SQL Server?

Do I have something wrong with the code?