Excellence inSoftware Engineering

Project Nashorn – why should we care

@michalgruca

Excellence in Software Engineering

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What is Nashorn

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Whats the fuss all about

● Yet another js runtime -> on server

● Quite fast

● Built on top of Java

● EcmaScript 5.1 compatible

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But Node

● Mature

● Tested

● Has ecosystem (modules)

● Fast!

V8 powered

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It's different architecture than Node!

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Threads!

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But WHY to use it?!

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Access to JVM!

JVM

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Really

Java

http://lustich.de/bilder/tiere/really-dog/

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Avatar.js

Avatar.js is a project to Avatar.js is a project to bring the nodebring the node programming model, APIs and module ecosystem programming model, APIs and module ecosystem to the Java platformto the Java platform, enabling a new class of , enabling a new class of hybrid server applications that can leverage two of hybrid server applications that can leverage two of the most popular programming languages and the most popular programming languages and ecosystems today. ecosystems today.

These These Java+JavaScriptJava+JavaScript applications can applications can leverageleverage capabilities of capabilities of both environmentsboth environments - - access the latest access the latest node frameworksnode frameworks while taking while taking advantage of the advantage of the Java platform's scalability, Java platform's scalability, manageability, toolsmanageability, tools, and extensive collection of , and extensive collection of Java Java librarieslibraries and middleware. and middleware.

https://avatar-js.java.net/

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Avatar.js

https://avatar-js.java.net/

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Compatible with existing Java applications

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Allows to create Java in Js

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L19https://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L25

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EnterpriseEnterprisereadyready

By Takashi Hososhima

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Enterprise?

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Big stuff

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Libs

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Security & Crypto

X.509X.509

PKIPKI

S/MIMES/MIME

Open/PGPOpen/PGP

PKCS#10 PKCS#10 PKCS#12PKCS#12

Hashing algorithmsHashing algorithms

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XML!

● SAX● Dom● STaX● ...● ...● Bindings● You name it!

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Office support

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Desktop

By Moriline: http://en.wikipedia.org/wiki/NetBeans#mediaviewer/File:Gui-builder.png

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Allows OS scripting!

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/scripts/fx.shhttps://github.com/mgruca/nashorn_example/blob/master/scripts/sample.sh

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IO

● Channels

● Streams

● Buffers

● Readers / Writers

● Blocking / Non blocking

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Testing and verification

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L48

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Access to all platforms and H/W

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Polyglot enabled

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cons

By Hans Hillewaert

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Slower than Node

May be twice+ slower than V8http://ariya.ofilabs.com/2014/03/nashorn-the-new-rhino-on-the-block.html

Excellence in Software Engineering

Mean tim

e in Java land

Mean tim

e in Java land

www.techempower.com/benchmarks

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Java experts necessary

2

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Can be tricky

By Yoel Ben-Avraham

Demo: https://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L42

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Real world examples

What can we do with it?What can we do with it?

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My project

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Questions

By Xurblehttps://www.flickr.com/photos/xurble/376588066/

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I love feedback! :)

@michalgruca

michal.gruca@gmail.com

www.rits.pl