How to display data in the table of a new window?

Question

Java

The controller of the main class, in which a new window is called by clicking on the button:
it passes the text from the text field

public void actionFilter(ActionEvent actionEvent) {
        Filter filter = new Filter(loadTextArea.getText());
        filter.print();
        FilterMain filterMain = new FilterMain();
        try {
            filterMain.start(new Stage());
        } catch (Exception ignored) {
        }
    }

The controller of the second window, in which there is a TableView and where you want to display the text:

@FXML
    public TableView<Filter> tableView;

    @FXML
    public TableColumn<Filter, String> columnWord;

    @FXML
    public TableColumn<Filter, Integer> columnFrequency;

    @Override
    public void initialize(URL location, ResourceBundle resources) {

        columnWord.setCellValueFactory(new PropertyValueFactory<>("word"));
        columnFrequency.setCellValueFactory(new PropertyValueFactory<>("number"));

        tableView.setItems(filters());
    }

    private ObservableList<Filter> filters(){
        Filter filter = new Filter();
        return filter.observableList();
    }

Where is the mistake? Even the window does not start, it seems to be normal, I pass the sheet from the Filter class, which is passed to the initialize method for output to the table.