Java 11 Cookbook

How to do it...

1. Let's create GridPane, which will hold the components in a grid of rows and columns:

        GridPane gridPane = new GridPane();
        gridPane.setAlignment(Pos.CENTER);
        gridPane.setHgap(10);
        gridPane.setVgap(10);
        gridPane.setPadding(new Insets(25, 25, 25, 25));

2. First, we will create a button and add two classes, btn, and btn-primary, to it. In the next step, we will define these selectors with the required CSS properties:

        Button primaryBtn = new Button("Primary");
        primaryBtn.getStyleClass().add("btn");
        primaryBtn.getStyleClass().add("btn-primary");
        gridPane.add(primaryBtn, 0, 1);

3. Now let's provide the required CSS properties for the classes, btn and btn-primary. The selector for the classes are of the form .<class-name>:

 .btn{ ...