Nashorn in Java 8

Everett Toews

Developer Advocate

@everett_toews

AustinJUGApril 22, 2014 @ 7:00 pm

What Is It?

Nashorn

Embedded

JavaScript

Engine

Nashorn

JavaScript 5.1

Nashorn

JavaScript

to

Java Bytecode

Nashorn

2 x to 10x

Performance

Improvement

Nashorn

JSR 292

“InvokeDynamic”

Nashorn

Efficient method

invocation without

type information

Nashorn

YADLOTJVM

What Does It Compare To?

Nashorn

V8

Nashorn

Google Chrome

Node.js

What Can I Do With It?

Nashorn

Shell Scripts

Nashorn

Command-line

Tool

Nashorn

Embedded

Interpreter

Nashorn

Anything

Node.js Can Do?

Nashorn

Avatar.js

Nashorn

Node.js apps using

Java libraries

Nashorn

Using legacy Java

code from Node.js

How Do I Use It?

Nashorn

export JAVA_HOME=

`/usr/libexec/java_home -v 1.8`

Nashorn

export PATH=

$JAVA_HOME/bin:$PATH

Nashorn

Interpreted

Nashorn

Script

CLI

Nashorn

Java

Nashorn

Java Interop

Where Did You Get This Information?

Nashorn

infoq.com/articles/nashorn

Thank You

developer.rackspace.com

Everett Toews

Developer Advocate

@everett_toews