Although I strongly advise against doing it, you can put bits of the business logic directly into FXML by using the JavaScript engine and the fx:script tag.
In the next example, we declare a handler directly in the FXML and assign it to the button:
<?language javascript?><?import javafx.scene.control.*?><?import javafx.scene.layout.*?><HBox alignment="CENTER" spacing="5.0" xmlns:fx="http://javafx.com/fxml/1"> <fx:script> function handleButtonAction(event) { textField.setText("clicked"); } </fx:script> <children> <Label text="Label" /> <TextField fx:id="textField" /> <Button fx:id="button" text="Button" onAction="handleButtonAction(event);"/> </children></HBox>
And, on button click, the TextField value will ...
