Javafx textfield settext does not work

Question

I have a registration screen, using FXML, and want to reuse this screen for the change button.

But when I do:

txtNome.setText("ola");
System.out.println(txtNome.getText());

Opens the registration screen, with the field Nome blank, console returns "ola" and returns no error.

Code that opens the registration screen:

public void newPage(String path){

        try {
            Stage stage;
            Parent root;
            FXMLLoader fxmlLoader = new FXMLLoader();
            fxmlLoader.setLocation(getClass().getClassLoader().getResource(path));
            root = fxmlLoader.load();
            stage = new Stage();
            stage.initModality(Modality.APPLICATION_MODAL);
            txtNome = new TextField();
            txtNome.setText("ola");
            System.out.println(txtNome.getText());
            stage.setScene(new Scene(root, 900, 900));
            stage.showAndWait();

        } catch(Exception e) {
            e.printStackTrace();
        }
    }

Answer 1

Good as you did not give more details of your code, I imagine you want when you click the change button to open a screen in modal already with information as for example: username?

if yes, follow a code:

    public void newPage(String path) {

    try {

        FXMLLoader root = new FXMLLoader(getClass().getResource(path));
        Stage stage = new Stage();
        stage.initModality(Modality.APPLICATION_MODAL);
        ControllerModal controllerModal = new ControllerModal("teste texto");
        root.setController(controllerModal);
        Scene scene = new Scene(root.load());

        stage.setScene(scene);

        stage.showAndWait();

    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

Controllermodal class:

public class ControllerModal implements Initializable{

@FXML
private Label texto;

private String testeTexto;

public ControllerModal(String testeTexto) {
    this.testeTexto = testeTexto;
}


public void initialize(URL location, ResourceBundle resources) {
    texto.setText(testeTexto);
}}

Explanation:

Well, with this code you will need to create a new controller class for this modal, thus following the MVC standard (this way you should not reuse the same FXML).

If that’s not what you wanted, leave more details.