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
Preface
25
Taking Notes with Monumentum
Bibliography
Index

The Linux/AArch64 port


Java Enhancement Proposal 237 (JEP 237) had a single goal of porting JDK 9 to Linux/AArch64. In order to understand what this means to us as Java 9 developers, let's talk a bit about hardware.

ARM is a British company that has been creating computing cores and architectures for over three decades. Their original name was Acorn RISC Machine (ARM), with RISC standing for Reduced Instruction Set Computing. Somewhere along the way, they changed their name to Advanced RISC Machine (ARM), and finally, to ARM Holdings or just ARM. They license their architectures to other companies. ARM reports that there have been over 100 billion ARM processors manufactured.

In late 2011, ARM came out with a new ARM architecture called ARMv8. This architecture included a 64-bit optional architecture called AArch64, which, as you would expect, came with a new instruction set. Here is an abbreviated list of AArch64 features:

  • A64 instruction set:
    • 31 general purpose 64-bit registers
    • Dedicated zero...