Dynamic TableView in Javafx

i am trying to populate a tableview with data from a sqlite-db, but it is not really working. the bug must be somewhere in the "col.setCellValueFactory(...)".

i am not really into javafx, so it would be nice if you could help me out :)

thanks!

public class DynamicTable{

ObservableList<ObservableList> data;
@FXML TableView tableview;

public void buildData(String table, String filter){
    tableview=new TableView();
    String SQL=null;
    Connection c= DBController.getConnection();
    data = FXCollections.observableArrayList();
    try{
        switch(table){
            case "Kuenstler":{
                SQL="SELECT * FROM Kuenstler";
                break;
            }
            case "Kunstwerke":{
                SQL="SELECT * FROM Kunstwerk WHERE Kunststil_Name='"+filter+"'";
                break;
            }
            case "Museen":{
                SQL="SELECT Museum.Name, Adresse.Stadt FROM Museum JOIN Gebaeude JOIN Adresse ON Museum.GebaeudeID=Gebaeude.GebaeudeID AND Adresse.AdressID=Gebaeude.AdressID WHERE Stadt='"+filter+"'";
                break;
            }
            case "Sammlungen":{
                SQL="SELECT * FROM Sammlung";
                break;
            }
        }


        ResultSet rs = c.createStatement().executeQuery(SQL);
        //Bug must be in this for-loop
        for(int i=0 ; i<rs.getMetaData().getColumnCount(); i++){
            final int j = i;
            TableColumn col = new TableColumn(rs.getMetaData().getColumnName(i+1));
            col.setCellValueFactory(new Callback<CellDataFeatures<ObservableList,String>,ObservableValue<String>>(){
                public ObservableValue<String> call(CellDataFeatures<ObservableList, String> param) {
                    return new SimpleStringProperty(param.getValue().get(j).toString());
                }
            });

            tableview.getColumns().addAll(col);
            System.out.println("Column ["+i+"] ");
        }

        while(rs.next()){

            ObservableList<String> row = FXCollections.observableArrayList();
            for(int i=1 ; i<=rs.getMetaData().getColumnCount(); i++){
                row.add(rs.getString(i));
            }
            System.out.println("Row [1] added "+row );
            data.add(row);

        }           
        tableview.setItems(data);

    }catch(Exception e){
        e.printStackTrace();
        System.out.println("Error on Building Data");
    }

}

}