JavaFX通过CSS设置背景

Question

I want to set a background to a group, which is the root for the scene. I tried this code, but the image does not appear. The image all.jpg is in the same Sourcefolder than the Main.java file. Could anyone help me, thank a lot

Group root = new Group();
    String image = Main.class.getResource("all.jpg").toExternalForm();
    root.setStyle("-fx-background-image: url('" + image + "') ");

Answer 1

A Group does not provide the ability to set a background through CSS . You need to use something which extends from Region to do that. Probably you can use a Pane which does more or like the same thing and can be styled with a background through CSS.

If you want to see whats possible for every component the CSS reference guide is the best way.

Java FX CSS Reference Guide