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Learning Scala Programming

You're reading from   Learning Scala Programming Object-oriented programming meets functional reactive to create Scalable and Concurrent programs

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788392822
Length 426 pages
Edition 1st Edition
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Author (1):
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Vikash Sharma Vikash Sharma
Author Profile Icon Vikash Sharma
Vikash Sharma
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Toc

Table of Contents (16) Chapters Close

1. Getting Started with Scala Programming 2. Building Blocks of Scala FREE CHAPTER 3. Shaping our Scala Program 4. Giving Meaning to Programs with Functions 5. Getting Familiar with Scala Collections 6. Object-Oriented Scala Basics 7. Next Steps in Object-Oriented Scala 8. More on Functions 9. Using Powerful Functional Constructs 10. Advanced Functional Programming 11. Working with Implicits and Exceptions 12. Introduction to Akka 13. Concurrent Programming in Scala 14. Programming with Reactive Extensions 15. Testing in Scala 16. Other Books You May Enjoy

The preStart and postStop hooks

Let's define these methods in the SimpleActor class to log the starting and stopping of our SimpleActor:

override def preStart(): Unit = log.info("SimpleActor starting!") 
 
override def postStop(): Unit = log.info("SimpleActor stopping!") 

Run:

[INFO] [12/27/2017 14:56:54.887] [SimpleActorSystem-akka.actor.default-dispatcher-3] [akka://SimpleActorSystem/user/simple-actor] SimpleActor starting! 
[INFO] [12/27/2017 14:56:54.915] [SimpleActorSystem-akka.actor.default-dispatcher-2] [akka://SimpleActorSystem/user/simple-actor] Executing GetPlayerInformationRequest(Cristiano Ronaldo, listOfPlayers) 
Player(Cristiano Ronaldo,Portugal,32,Real Madrid,Spain,4829,4789,1,2) 
[INFO] [12/27/2017 14:56:54.938] [SimpleActorSystem-akka.actor.default-dispatcher-2] [akka://SimpleActorSystem/user/simple-actor] SimpleActor stopping...
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