Presentation from 4developers conference about Nashorn. It aims to show how Nashorn can be used and why it's not yet another Node.

1. 1CONFIDENTIAL
Nashorn, what is the
whole buzz about

2. 2CONFIDENTIAL
Ask questions
By The U.S. Army

3. 3CONFIDENTIAL
I love your feedback! 
@michalgruca
michal.gruca@gmail.com
www.rits.pl

4. 4CONFIDENTIAL

5. 5CONFIDENTIAL
GENERAL
NASHORN

6. 6CONFIDENTIAL

7. 7CONFIDENTIAL
• yet another js runtime -> on server
built on top of Java
quite fast
EcmaScript 5.1 compatible
Nashorn is …
By Valentina Storti

8. 8CONFIDENTIAL
Allows to build DSL
Runtime modularity
Full access from .js to JVM
A lot of developers on market
Simple language
Even your user may try it
Why to use

9. 9CONFIDENTIAL
Or because …

10. 10CONFIDENTIAL
GENERAL
NASHORN :: DEMO

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TWO WAY INTEROPERABILITY
NASHORN :: DEMO

12. 12CONFIDENTIAL
TESTING
NASHORN :: DEMO

13. 13CONFIDENTIAL
VALIDATION
NASHORN :: DEMO

14. 14CONFIDENTIAL
SCRIPTING
NASHORN :: DEMO

15. 15CONFIDENTIAL
PROJECT AVATAR
NASHORN

16. 16CONFIDENTIAL
• Project Avatar is a JavaScript service
layer, that fully utilizes Nashorn
Engine.
• It aims at reducing JavaScript
knowledge required to start coding
• It’s a direct response to node
What avatar is

17. 17CONFIDENTIAL
https://www.flickr.com/photos/45928872@N08/4211101808/

18. 18CONFIDENTIAL
www.techempower.com/benchmarks

19. 19CONFIDENTIAL
CONS
NASHORN

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http://ariya.ofilabs.com/2014/03/nashorn-the-new-rhino-on-the-block.html

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• Nashorn is much slower than Node
– But getting faster! (JDK8u20 & JDKu40)
• JDK 8 only
– JDK 7: Rhino and dynJS
• May have issues with various frameworks
• Yet another level of abstraction
– With not so many examples
https://www.threadless.com/@alanis

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Can be tricky
• Types
– Collections
• Programming model
• Execution model
• Scopes & contextes
• Libraries
• Developers
by Yoel Ben-Avraham

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ITERATING
NASHORN :: DEMO

24. 24CONFIDENTIAL
REAL WORLD EXAMPLE
NASHORN

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My project
• Soft real time
• Controlling thousands of
devices
• Multithreaded
• „Distributed”

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27. 27CONFIDENTIAL
I love your feedback! 
@michalgruca
michal.gruca@gmail.com
www.rits.pl