Book Image

Java 9 Programming Blueprints

By : Lee
Book Image

Java 9 Programming Blueprints

By: 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 (13 chapters)
9
Taking Notes with Monumentum

Nodes, a NetBeans presentation object


You've already heard the term Node. I've used it several times to describe what and where to click. Officially, a Node represents one element in a hierarchy of objects (beans). It provides all the methods that are needed for communication between an explorer view and the bean. In the explorer section of our application, we want to represent a list of photos to the user. We'll represent each photo, as well as the year and month in which it was taken, as a Node. To display these Nodes, we'll use a NetBeans class called the BeanTreeView, which will display this node hierarchy as a tree. There are a few more concepts to learn, but let's start with what we have first.

We'll begin by defining our Nodes, which will serve as a sort of wrapper or bridge between our application's business domain model and the NetBeans APIs. We have not, of course, defined such a model, so we need to settle on that now. Our basic data item is a photograph, a file on disk that holds...