how to add dynamically nodes to pane in javafx

Question

I want to add dynamically labels to a pane :

for (int k = 0; k < traitement.quad.lqua.size(); k++) 
{
  Label l = new Label();
  l.setText(traitement.quad.lqua.get(k));
  apane.getChildren().add(l);
}

here is the result :

i don't want to have them in the same place i want to have one label by ligne , so where is the issue ?

And the AnchorPane is the white area where the labels are added? Is there anything else, that will be added to that pane? — hotzst
– hotzst, Commented Jan 17, 2016 at 20:10

hotzst · Accepted Answer · 2016-01-17 20:17:43Z

1

Replace the AnchorPane with a VBox. That way all the labels will be added one below another.

AnchorPane manages the layouting of the children according to the anchor, which in your case seems to be top left. This works well if there is only one child, but will result in a mess if there are more.

In my personal experience I find AnchorPane not very useful when it comes to designing complex user interface. I usually en up using a Group or Pane instead and handle the layouting myself.

answered Jan 17, 2016 at 20:17

hotzst

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3 Comments

Abderrahmane Mechri Over a year ago

i have an exception : Caused by: java.lang.NullPointerException in this ligne : apane.getChildren().add(l);

hotzst Over a year ago

That is probably because apane is not initialized before adding the child node.

Abderrahmane Mechri Over a year ago

no this is not the probleme i have try to add in fxml code a label it's shown by the one that i have add dynamically does not appear

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