Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1rqaNO1. Viktor Gamov presents and demos the latest state of Project Nashorn, a high-performance JavaScript engine available on the JVM. Filmed at qconnewyork.com. Viktor Gamov is a Senior software engineer in Farata Systems. He helps financial companies with various Java and HTML5 projects. He holds MS in Computer Science. He is a co-organizer of the Princeton Java Users Group and co-author of the O'Reilly book on Enterprise Web Development. He tweets at @gamussa.

1. www.faratasystems.com // follow me : twitter.com/gamussa
Nashorn - Native
JavaScript in Java 8
Viktor Gamov
Senior Software ENGINEER, Farata Systems
QCon new york 2014

2. Watch the video with slide
synchronization on InfoQ.com!
http://www.infoq.com/presentations
/nashorn-java8
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4. Why you’re here
★you're excited about JDK8 features

6. Why you’re here
★you're excited about JDK8 features
★JavaScript enthusiast
★Just need to kill time before Reception

7. Who is talking?
★Software engineer and consultant

8. WE BUILD APPLICATIONS.
WE CREATE IT. YOU OWN IT.

9. Who is talking?
★Software engineer and consultant
★co-author and JUG co-lead

11. Coming to the stores
this summer (hopefully)
http://enterprisewebbook.com

12. Draft available for free
http://enterprisewebbook.com

13. Who is talking?
★Software engineer and consultant
★co-author and JUG co-lead
★Guy between you and beer

14. Polyglot?

15. Everybody knows how to javascript

16. JavaScript, wat?
www.destroyallsoftware.com/talks/wat

17. print(3[3]);

18. Number.prototype[3] = “qconnewqork";
print(3[3]);

20. MANY good Parts

21. JAVASCRIPT on JVM USE cASES
SHELL Scripting
Extend app functionality on
runtime
1
2
3
provide extension points for
application
4 WEB-content generation

22. wait, javascript?
it’s only for browsers

23. JAVAScript is everywhere
★v8 and nodejs
★Rhino was here for years
★Here comes nashorn

24. What is Nashorn?

25. What is Nashorn?
Ultimate invokedynamic
consumer
100% pure Java
implementation
100% ECMAScript 5.1
compliant
JavaScript Engine for
JVM
100% compiled to
bytecode,
no interpreter
http://www.1001ausmalbilder.de/ausmalbilder/gross/ausmalbild-nashorn-7.jpg

26. HOW To USE NASHORN?
★The only API is JSR-223: javax.scripting.*
★Java from JavaScript and vice versa
★Create and manipulate Java/JavaScript objects
★Extend Java classes
★Implement Java interfaces

27. Story one:
Curious
support engineer

28. Story one:
Curious support engineer

29. Story two:
Family BUSINESS

30. Story two:
Family BUSINESs

31. Story Three:
NASHORN for Browser

32. NASHORN in «wild life»
★vert.x nashorn module
★Project Avatar (former node.jar)

33. Demo

34. Restrictions
★There ARE No browser APIs:
★HTML5 canvas
★HTML5 audio
★WebWorkers
★WebSockets
★WebGL

35. SHOW ME THE CODE
https://github.com/gAmUssA/java-scripting-experiments

36. Q&A

37. THANKS FOR YOUR ATTENTION
www.faratasystems.com // follow me : twitter.com/gamussa

38. Watch the video with slide synchronization on
InfoQ.com!
http://www.infoq.com/presentations/nashorn-java8