On many occasions, Java applications may suffer from performance degradation. Exacerbating the issue is a lack of performance tests that can provide at least a minimal set of guarantees that performance requirements are met and, moreover, the performance of certain features will not degrade over time. Measuring performance of Java applications is not trivial, especially due to the fact that there is a number of compiler and runtime optimizations that may affect performance statistics. For that reason, additional measures such as warm-up phases and other tricks must be used in order to provide more accurate performance measurements. The Java Microbenchmark Harness is a framework that incorporates a number of techniques along with a convenient API that can be used for this purpose. It is not a new tool, but is included with the distribution of Java 9. If you have not added JMH to your toolbox yet, read the detailed chapter on the usage of JMH in the context of Java 9 application development.
Java 9: Building Robust Modular Applications
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Java 9: Building Robust Modular Applications
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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
Free Chapter
The Java 9 Landscape
Discovering Java 9
Java 9 Language Enhancements
Building Modular Applications with Java 9
Migrating Applications to Java 9
Experimenting with the Java Shell
Leveraging the New Default G1 Garbage Collector
Microbenchmarking Applications with JMH
Making Use of the ProcessHandle API
Fine-Grained Stack Tracing
New Tools and Tool Enhancements
Concurrency and Reactive Programming
Security Enhancements
Command Line Flags
Best Practices In Java 9
Future Directions
Introduction
Managing Processes in Java
Duplicate File Finder
Date Calculator
Sunago - A Social Media Aggregator
Sunago - An Android Port
Email and Spam Management with MailFilter
Photo Management with PhotoBeans
Taking Notes with Monumentum
Serverless Java
DeskDroid - A Desktop Client for Your Android Phone
What is Next?
Bibliography
Index
Customer Reviews