public void updateTable(String tableName, String poleSzukane, String wartoscSzukana, String poleZmienne, String nowaWartosc){
        Statement statement;
        Connection connection;
        try{
            Class.forName("org.sqlite.JDBC");
            connection = DriverManager.getConnection("jdbc:sqlite:" +tableName+ ".db");
            statement = connection.createStatement();
            String query = "UPDATE " + tableName + " SET " + poleZmienne+ " = \""+nowaWartosc+"\" WHERE "+poleSzukane+" = \""+wartoscSzukana+"\"";
            ResultSet wynik = statement.executeQuery(query);
            statement.close();
            connection.close();
        }catch(Exception e){
    e.printStackTrace();
        }
    }
}