Bind dataset in a chart

Question

Hello,
I want just load some data from database and show it in a javafx chart.
Since it's not possible to instantiate a javafx app and pass some values like a dataset, it must be possible to bind the data. An example would be great!

Answer 1

That's a really poor design though, IMO. No main(...) method should ever invoke any logic other than creating an object. The business logic should be processed in some kind of business object. That way you can create your business object anywhere you need (in your start(...) method, for example, or in the initialize() method of your controller).
public class DataAccessor {
     public DataAccessor() {
          // ... initialize database connections, etc
     public List<DataObject> getDataObjects() {
          // retrieve data from database
     // other methods as required (update data, etc)
public class Controller {
     private final DataAccessor dataAccessor ;
     // define UI components injected from FXML
     public Controller(DataAccessor dataAccessor) {
          this.dataAccesssor = dataAccessor ;
     public void initialize() {
          // bind data from data accessor to UI Components
public class MyFXApp extends Application {
     @Override
     public void start(Stage primaryStage) throws IOException {
          DataAccessor dataAccessor = new DataAccessor();
          Controller controller = new Controller(dataAccessor) ;
          FXMLLoader loader = new FXMLLoader(getClass().getResource("path/to/fxml/resource");
          loader.setController(controller);
          Scene scene = new Scene((Parent)loader.load());
          primaryStage.setScene(scene);
          primaryStage.show();
     // ignored in most deployment scenarios...
     public static void main(String[] args) {
          launch(args);