Nashorn - Native JavaScript in Java 8 Viktor Gamov Senior Software - PowerPoint PPT Presentation

Nov 20, 2022 •50 likes •400 views

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 Why youre here you're excited about JDK8 features Why youre here

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
Why you’re here ★ you're excited about JDK8 features
Why you’re here ★ you're excited about JDK8 features ★ JavaScript enthusiast ★ Just need to kill time before Reception
Who is talking? ★ Software engineer and consultant
WE BUILD APPLICATIONS. WE CREATE IT. YOU OWN IT.
Who is talking? ★ Software engineer and consultant ★ co-author and JUG co-lead
Coming to the stores this summer (hopefully) http://enterprisewebbook.com
Draft available for free http://enterprisewebbook.com
Who is talking? ★ Software engineer and consultant ★ co-author and JUG co-lead ★ Guy between you and beer
Polyglot?
Everybody knows how to javascript
JavaScript, wat? www.destroyallsoftware.com/talks/wat
  print(3[3]);  
  Number . prototype [3] = “qconnewqork" ; print(3[3]);  
MANY good Parts
JAVASCRIPT on JVM USE cASES 1 SHELL Scripting Extend app functionality on 2 runtime provide extension points for 3 application 4 WEB-content generation
wait, javascript? it’s only for browsers
JAVAScript is everywhere ★ v8 and nodejs ★ Rhino was here for years ★ Here comes nashorn
What is Nashorn?
What is Nashorn? JavaScript Engine for 100% pure Java JVM implementation Ultimate invokedynamic consumer 100% ECMAScript 5.1 compliant 100% compiled to bytecode, no interpreter http://www.1001ausmalbilder.de/ausmalbilder/gross/ausmalbild-nashorn-7.jpg
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
Story one: Curious support engineer
Story one: Curious support engineer
Story two: Family BUSINESS
Story two: Family BUSINESs
Story Three: NASHORN for Browser
NASHORN in «wild life» ★ vert.x nashorn module ★ Project Avatar (former node.jar)
Demo
Restrictions ★ There ARE No browser APIs: ★ HTML5 canvas ★ HTML5 audio ★ WebWorkers ★ WebSockets ★ WebGL
SHOW ME THE CODE https://github.com/gAmUssA/java-scripting-experiments
Q & A
THANKS FOR YOUR ATTENTION www.faratasystems.com // follow me : twitter.com/gamussa

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