Book Image

Java 9 Programming Blueprints

By : Jason Lee
Book Image

Java 9 Programming Blueprints

By: Jason Lee

Overview of this book

Java is a powerful language that has applications in a wide variety of fields. From playing games on your computer to performing banking transactions, Java is at the heart of everything. The book starts by unveiling the new features of Java 9 and quickly walks you through the building blocks that form the basis of writing applications. There are 10 comprehensive projects in the book that will showcase the various features of Java 9. You will learn to build an email filter that separates spam messages from all your inboxes, a social media aggregator app that will help you efficiently track various feeds, and a microservice for a client/server note application, to name a few. The book covers various libraries and frameworks in these projects, and also introduces a few more frameworks that complement and extend the Java SDK. Through the course of building applications, this book will not only help you get to grips with the various features of Java 9, but will also teach you how to design and prototype professional-grade applications with performance and security considerations.
Table of Contents (19 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback
Taking Notes with Monumentum

Initializing the user interface

While the FXML defines the structure of the user interface, we do need some Java code to initialize various elements, respond to actions, and so forth. This class, referred to as the controller, is simply a class that extends javafx.fxml.Initializable:

    public class Controller implements Initializable { 
      private TableView<ProcessHandle> processList; 
      public void initialize(URL url, ResourceBundle rb) { 

The initialize() method comes from the interface, and is used by the JavaFX runtime to initialize the controller when it is created in the call to FXMLLoader.load() from the preceding Application class. Note the @FXML annotation on the instance variable processList. When JavaFX initializes the controller, before the initialize() method is called, the system looks for FXML elements that specify an fx:id attribute, and assigns that reference to the appropriate instance variable in the controller...