How can I a run method I've created automatically when a stage starts in javafx without hitting a button?

Question

I have a scene called homepage.fxml in my application. It has a Linechart in it and I created a button to refresh the chart (that's when the data is displayed). What I want is for the data to be displayed in the chart once the stage commences. I'm guessing I need to call the method (refreshPressed()) when the app starts but I'm a novice programmer so please help me out. I also looked at this: link to something similar but it's not helping.

Answer 1

In the initialize() method of the controller for your FXML, invoke fire() on the button.

Code snippet from the controller:

@FXML Button button;

public void initialize() {
    button.fire();
}

@FXML
public void refreshPressed() {
    // refresh chart.
}

Corresponding snippet from FXML:

<Button fx:id="button" text="Refresh" onAction="#refreshPressed"/>