How can I access multiple ToggleButtons created in a class?

[Pedro Cristo]

Hello,

I have a GridPane (6x9) made with SceneBuilder. Inside that GridPane I created 50 ToggleButtons in my controller with the following code:

@FXML
private void initialize() {
	Font numbersFont = new Font("Arial", 10);
	for (int y = 0; y < 9; y++){
		for (int x = 1; x < 7; x++) {
			Integer buttonId = (y * 6) + x;
			if (buttonId == 51) {break;}
			ToggleButton tb = new ToggleButton(Integer.toString(buttonId));
			tb.setId("tb_" + Integer.toString(buttonId));
			tb.setFont(numbersFont);
			tb.setPrefSize(27, 27);
			tb.setAlignment(Pos.CENTER);
			tb.selectedProperty().addListener(new ChangeListener<Boolean>() {
				@Override
				public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
					boolean isSelected = newValue;
					System.out.println(isSelected);
				}
			});
			numbersGrid.add(tb, x - 1, y);
		}
	}
}

In my MainApp.java I've created an array of integers:

private ObservableIntegerArray selectedNumbers = FXCollections.observableIntegerArray();

I have two questions.

1. I want is to update the selectedNumbers array with the numbers of the ToggleButtons that are pressed. For example, if I press button 1, 13 and 25, the array should be [1, 13, 25]. When I "turn off" a button, that number should be removed from the array. How can I add and remove those values? Where should I have this code? Inside the initialize method?

2. I have a method that randomly picks N numbers from the 50 available (1 to 50). When the user clicks a button, I want the ToggleButtons with that number to be "turned on". I know how to do a loop but how can I access the buttons? I mean, I named them tb_1, tb_2 and so on. So... how can I call them?

Thanks!

[John Damien Smith]

This question is answered at:

http://stackoverflow.com/questions/28541310/how-can-i-access-multiple-togglebuttons-created-in-a-class

[Darryl Burke]

Pedro, please BeForthrightWhenCrossPostingToOtherSites