Java How to Program, Early Objects, 11th Edition

... the app loads the FXML file at runtime, you must specify the controller class’s name in the FXML file:

1. Expand Scene Builder’s Controller window (located below the Hierarchy window).

2. In the Controller Class field, type PainterController.

Step 12: Specifying the Event-Handler Method Names

Next, you’ll specify in the Inspector window’s Code section the names of the methods that will be called to handle specific control’s events:

• For the drawingAreaPane, specify drawingAreaMouseDragged as the On Mouse Dragged event handler (located under the Mouse heading in the Code section). This method will draw a circle in the specified color and size for each mousedragged event.

• For the four Drawing Color RadioButtons, specify colorRadioButtonSelected ...