public class Conexao extends SQLException{
    private String url;
    private String user;
    private String pass;
    private String driver;
    private Connection conexao;

    private void configura()
    {
        ResourceBundle config = ResourceBundle.getBundle("Persistencia.BD");
        driver = config.getString("driver");
        url = config.getString("url");
        user = config.getString("user");
        pass = config.getString("pass");
    }

    public Connection conectar()// OK
    {
        try
        {
            configura();
            Class.forName(driver);
            conexao = DriverManager.getConnection(url,user,pass);
        }
        catch (ClassNotFoundException e)
        {
                System.out.println("Classe não encontrada");
        }
        catch (SQLException e)
        {
                System.out.println("Problemas com o BD"+e);
        }
        return conexao;
     }
}