Book Image

Mastering Concurrency Programming with Java 9 - Second Edition

By : Javier Fernández González
Book Image

Mastering Concurrency Programming with Java 9 - Second Edition

By: Javier Fernández González

Overview of this book

Concurrency programming allows several large tasks to be divided into smaller sub-tasks, which are further processed as individual tasks that run in parallel. Java 9 includes a comprehensive API with lots of ready-to-use components for easily implementing powerful concurrency applications, but with high flexibility so you can adapt these components to your needs. The book starts with a full description of the design principles of concurrent applications and explains how to parallelize a sequential algorithm. You will then be introduced to Threads and Runnables, which are an integral part of Java 9's concurrency API. You will see how to use all the components of the Java concurrency API, from the basics to the most advanced techniques, and will implement them in powerful real-world concurrency applications. The book ends with a detailed description of the tools and techniques you can use to test a concurrent Java application, along with a brief insight into other concurrency mechanisms in JVM.
Table of Contents (21 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Chapter 12. Testing and Monitoring Concurrent Applications

Software testing is a critical task in every development process. Every application has to fulfill end user requirements, and the testing phase is the place to prove this. It has to generate valid results in an acceptable time and with the specified format. The main objective of the testing phase is to detect as many errors as possible in the software to correct them and increase the global quality of the product.

Traditionally, in the waterfall model, the testing phase begins when the development phase is very advanced, but nowadays, more and more development teams are using agile methodologies, where the testing phase is integrated into the development phase. The main objective is to test the software as soon as possible to detect errors earlier in the process.

In Java, there are a lot of tools, such as JUnit or TestNG, to automatize the execution of tests. Other tools, such as JMeter, allow you to test how many users can execute...