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Java 11 Cookbook

You're reading from   Java 11 Cookbook A definitive guide to learning the key concepts of modern application development

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Product type Paperback
Published in Sep 2018
Publisher
ISBN-13 9781789132359
Length 802 pages
Edition 2nd Edition
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Authors (2):
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Mohamed Sanaulla Mohamed Sanaulla
Author Profile Icon Mohamed Sanaulla
Mohamed Sanaulla
Nick Samoylov Nick Samoylov
Author Profile Icon Nick Samoylov
Nick Samoylov
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Toc

Table of Contents (18) Chapters Close

Preface 1. Installation and a Sneak Peek into Java 11 FREE CHAPTER 2. Fast Track to OOP - Classes and Interfaces 3. Modular Programming 4. Going Functional 5. Streams and Pipelines 6. Database Programming 7. Concurrent and Multithreaded Programming 8. Better Management of the OS Process 9. RESTful Web Services Using Spring Boot 10. Networking 11. Memory Management and Debugging 12. The Read-Evaluate-Print Loop (REPL) Using JShell 13. Working with New Date and Time APIs 14. Testing 15. The New Way of Coding with Java 10 and Java 11 16. GUI Programming Using JavaFX 17. Other Books You May Enjoy

Obtaining the process information of the current JVM


A running process has a set of attributes associated with it, such as the following:

  • PID: This uniquely identifies the process
  • Owner: This is the name of the user who launched the process
  • Command: This is the command that runs under the process
  • CPU time: This indicates the time for which the process has been active
  • Start time: This indicates the time when the process was launched

These are a few attributes that we are generally interested in. Perhaps we would also be interested in CPU usage or memory usage. Now, getting this information from within Java was not possible prior to Java 9. However, in Java 9, a new set of APIs has been introduced, which enables us to get the basic information about the process. 

In this recipe, we will see how to get the process information for the current Java process; that is, the process that is executing your code.

How to do it...

Follow these steps:

  1. Create a simple class and use ProcessHandle.current() to get...
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