codice:
public Connection setDbConnection(String host, String port,String dbName,String user, String pwd,  String transactionIsolationLevel, String paramsIsolationLevel ) throws ClassNotFoundException, SQLException{

        Class.forName(org.firebirdsql.jdbc.FBDriver.class.getName());
        String strDriver = "jdbc:firebirdsql:"+host+"/"+port+":"+ dbName;
        this.conn = DriverManager
                .getConnection(
                        strDriver , setDBProperties(user, pwd, paramsIsolationLevel, paramsIsolationLevel));
        System.out.println("Connessione avvenuta");

        return this.conn;
    }