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
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
9
Taking Notes with Monumentum

Chapter 3. Duplicate File Finder

Any system that's been running for a while starts to suffer from hard drive clutter. This is especially true, for example, with large music and photo collections. Except for the most fastidious files getting copied and moved, we end up with a copy here and a copy there. The question is, though, which of these are duplicates and which are not? In this chapter, we'll build a file-walking utility that will scan a set of directories looking for duplicate files. We'll be able to specify whether the duplicates should be deleted, quarantined, or simply reported.

In this chapter, we will cover the following topics:

  • The Java Platform Module System
  • The Java NIO (New I/O) File APIs
  • File hashing
  • Java Persistence API (JPA)
  • The new Java Date/Time API
  • Writing command-line utilities
  • More JavaFX