我想在 AnchorPane 的三个边上设置边框,而不是四个

I want to make border around three sides of AnchorPane, not four

在AnchorPane周围做一个边框,但是她的四个边出现了,当然,而且只想要三个边。如何做到这一点?

    AnchorPane pane = new AnchorPane();
    pane.setStyle("-fx-border-color: green;");

尝试:

 pane.setStyle("-fx-border-color: green; -fx-border-width: 1px 1px 1px 0px");