Book Image

Java 9: Building Robust Modular Applications

By : Dr. Edward Lavieri, Peter Verhas, Jason Lee
Book Image

Java 9: Building Robust Modular Applications

By: Dr. Edward Lavieri, Peter Verhas, Jason Lee

Overview of this book

Java 9 and its new features add to the richness of the language; Java is one of the languages most used by developers to build robust software applications. Java 9 comes with a special emphasis on modularity with its integration with Jigsaw. This course is your one-stop guide to mastering the language. You'll be provided with an overview and explanation of the new features introduced in Java 9 and the importance of the new APIs and enhancements. Some new features of Java 9 are ground-breaking; if you are an experienced programmer, you will be able to make your enterprise applications leaner by learning these new features. You'll be provided with practical guidance in applying your newly acquired knowledge of Java 9 and further information on future developments of the Java platform. This course will improve your productivity, making your applications faster. Next, you'll go on to implement everything you've learned by building 10 cool projects. 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 just a few. By the end of this course, you will be well acquainted with Java 9 features and able to build your own applications and projects. This Learning Path contains the best content from the following two recently published Packt products: • Mastering Java 9 • Java 9 Programming Blueprints
Table of Contents (33 chapters)
Title Page - Courses
Packt Upsell - Courses
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...