8.5 Graphics Supplement
Good Heavens! For more than forty years I have been speaking prose without knowing it.
—MOLIèRE, Le Bourgeois Gentilhomme
Event-Driven Programming
In this section, we explain how to assign actions to a control like a button. JavaFX applications use events and event handlers. An event is an object that represents some user action that elicits a response, such as clicking a button with the mouse. When an object generates an event, it is said to fire the event. For example, when the user clicks a button, the button fires an event. In a JavaFX application, every object that can fire events can have one or more listener objects that receive events automatically. A listener object has methods that specify what will happen ...
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