private   void  FBwork() {
        try  {
          Class .forName("org.firebirdsql.jdbc.FBDriver");
         JOptionPane.showMessageDialog( this , "org.firebirdsql.jdbc.FBDriver");
         String url = "jdbc:firebirdsql:localhost/3050:CARD";
         Connection CNN = DriverManager.getConnection(url, "sysdba", "password");  // ERROR!!!
         JOptionPane.showMessageDialog( this , "CNN");
         Statement ST = CNN.createStatement();
         ResultSet RS = ST.executeQuery("SELECT WRK_FIO FROM WORKER WHERE WRK_PASS='777'");
          if  (RS.next()) JOptionPane.showMessageDialog( this , RS.getString( 1 ));
         RS.close();
         CNN.close();
         JOptionPane.showMessageDialog( this , "Close");
         }  catch  (Exception e) {
         System.err.println("Unable to load driver: " + e);
         }
    
}