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

Taking control of external processes


Up to JDK 9, if you wanted to create a Java process and handle process input/output, you had to use either the Runtime.getRuntime.exec() method, which allows us to execute a command in a separate OS process and get a java.lang.Process instance over which to provide certain operations in order to manage the external process, or use the new java.lang.ProcessBuilder class with some more enhancements in regard to interacting with the external process and also create a java.lang.Process instance to represent the external process. Both mechanisms were inflexible and also non-portable as the set of commands executed by the external processes were highly dependent on the operating system (additional effort had to be exerted in order to make the particular process operations portable across multiple operating systems). A chapter is dedicated to the new process API, providing developers with the knowledge of creating and managing external processes in a much easier way.