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Java 11 and 12 ??? New Features: Learn about Project Amber and the latest developments in the Java language and platform

Gupta

€8.99 ~~€19.99~~

eBook Mar 2019 242 pages 1st Edition

Gupta

€8.99 ~~€19.99~~

eBook Mar 2019 242 pages 1st Edition

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Instant access to your Digital eBook purchase

Download this book in EPUB and PDF formats

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Key benefits

Overcome the challenges involved in migrating to new versions of Java
Discover how Oracle has bridged the gap between Java and native code
Make the best use of new Java features and libraries in your applications

Description

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.

Who is this book for?

If you’re an executive or solutions architect responsible for technology selection or Java migration decisions, this Java book is for you. You’ll also benefit from this book if you’re a computer science enthusiast curious to learn about the latest and upcoming Java features. This book will help you migrate your solutions from Java 8 or older to the latest Java release.

What you will learn

Study type interference and how to work with the var type
Understand Class-Data Sharing, its benefits, and limitations
Discover platform options to reduce your application's launch time
Improve application performance by switching garbage collectors
Get up to date with the new Java release cadence
Define and assess decision criteria for migrating to a new version of Java

What do you get with eBook?

Instant access to your Digital eBook purchase

Download this book in EPUB and PDF formats

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

AI Assistant (beta) to help accelerate your learning

Product Details

Publication date : Mar 26, 2019

Length: 242 pages

Edition : 1st

Language : English

ISBN-13 : 9781789137316

Vendor :

Oracle

Category :

Programming

Languages :

Java

Concepts :

Programming Language

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22 Chapters

Section 1: JDK 10

Type Inference

What is type inference?

Type inference with var

Type inference in previous versions of Java

Challenges

Type inference versus dynamic binding

Summary

AppCDS

Technical requirements

What is CDS?

AppCDS

Summary

Garbage Collector Optimizations

Technical requirements

The GC interface

Parallel full GC for G1 (JEP 307)

Summary

Miscellaneous Improvements in JDK 10

Technical requirements

Mapping JDK 10 features with scopes and JEPs

Summary

Section 2: JDK 11

Local Variable Syntax for Lambda Parameters

Technical requirements

Lambda expressions

Lambda parameters and type inference with var

Summary

Epsilon GC

Technical requirements

The motivation behind Epsilon GC

Getting started with the HelloEpsilon GC class

Memory pressure testing with Epsilon

Designing a garbage-free application

Summary

The HTTP Client API

Technical requirements

A quick flashback

Some examples

Summary

ZGC

Technical requirements

Flight Recorder and Mission Control

Technical requirements

The motivation behind JFR

Getting started with JFR

Working with custom events

Summary

Miscellaneous Improvements in JDK 11

Technical requirements

Listing the JEPs that are used in this chapter

Nest-based access control

Dynamic class-file constants

Improving AArch64 intrinsics

Removing the Java EE and CORBA modules

A key agreement with Curve25519 and Curve448

Unicode 10

ChaCha20 and Poly1305 cryptographic algorithms

Launching single file source code programs

TLS 1.3

Deprecating the Nashorn JavaScript engine

JEP 336 – deprecating the pack200 tools and API

Summary

Section 3: JDK 12

Switch Expressions

Technical requirements

Issues with traditional switch constructs

Using switch expressions

Defining local variables in a switch branch

Another syntax for switch expressions

Comparing break with break <return value>

A preview language feature

Exhaustive cases

What can a switch branch execute other than returning a value?

How not to use labels and continue in switch expressions

Summary

Miscellaneous Improvements in JDK 12

Technical requirements

Mapping features of JDK 12 scope and JEP

Shenandoah – a low-pause-time GC

The microbenchmark suite

The JVM constants API

One AArch64 port, not two

Default CDS archives

Abortable mixed collections for G1

Promptly return unused committed memory from G1

Summary

Section 4: Project Amber

Enhanced Enums in Project Amber

A quick background

The state and behavior of enum constants

Summary

Data Classes and Their Usage

An introduction to data classes

Diving into data classes

Summary

Raw String Literals

Technical requirements

A quick example

Issues with existing multiline string values

Welcoming raw string literals

Managing margins

Common examples

Summary

Lambda Leftovers

Technical requirements

Marking unused parameters with underscores

Shadowing of lambda parameters

Disambiguation of functional expressions

Summary

Pattern Matching

Technical requirements

Pattern matching

Existing issues with type testing

Type test patterns

Using pattern matching with switch constructs

Summary

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About the author

Gupta

Rakesh Gupta is best known as an automation champion in the Salesforce ecosystem. He has written over 150 articles on Visual Workflow and Process Builder to show how someone can use Visual Workflow and Process Builder to minimize code usage. He is one of the Visual Workflow and Process Builder experts in the industry. He has trained more than 700 individual professionals around the globe and conducted corporate training. Currently, Rakesh is working as a Salesforce solution architect consultant.

See other products by Gupta

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Java 11 and 12 ??? New Features: Learn about Project Amber and the latest developments in the Java language and platform

What do you get with eBook?