Book Image

Java 11 and 12 ??? New Features

By : Mala Gupta
Book Image

Java 11 and 12 ??? New Features

By: Mala Gupta

Overview of this book

With its new six-monthly release cadence, Java is moving forward faster. In addition to planned version releases, a lot of work is currently being undertaken on various Java projects at Oracle. In order to make best use of the new features in their applications and libraries, you must be well-versed with the most recent advancements. Java 11 and 12 – New Features will take you through the latest developments in Java, right from variable type inference and simplified multithreading through to performance improvements, which are covered in depth to help you make your applications more efficient. This book explains the relevance and applicability of Java's new features, and answers your questions on whether to invest in migrating to new Java versions and when to migrate. You'll also get to grips with platform features, such as AppCDS and new garbage collectors, to tune and optimize your application—from reduced launch time and latency to improved performance and throughput. By the end of this book, you will be equipped with a thorough understanding of the new features of Java 11, 12, and Project Amber, and possess the skills to apply them with a view to improving your application's performance.
Table of Contents (23 chapters)
Free Chapter
1
Section 1: JDK 10
6
Section 2: JDK 11
13
Section 3: JDK 12
16
Section 4: Project Amber

Mapping features of JDK 12 scope and JEP

The following table lists the JDK 12 features covered in this chapter, their corresponding JEP number, and their scope:

JEP

Scope

Description

189

Implementation

Shenandoah—a low-pause-time GC

230

JDK

The microbenchmark suite

334

SE

The JVM constants API

340

JDK

One AArch64 port, not two

341

JDK

Default CDS archives

344

Implementation

Abortable mixed collections for G1

346

Implementation

Promptly return unused committed memory from G1

Let's get started with the first feature.