Nashorn Java Script Engine in Java8

Nashorn is a JavaScript engine developed in the Java programming language by Oracle and released in Java 8.

Nashorn 

      - Implements a light weight high-performance JavaScript runtime in Java with a native JVM

      - Developers can develop free standing JavaScript applications using the jrunscript command-    line tool

      - It's all together new code base, foucsed on the newer technologies.

      - Utilizes the MethodHandles and InvokeDynamic API's described in JSR-292

Examples:

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Inline scripts:

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jrunscript -e "print ('Hello Programmers Stack Viewers')" ;

Hello Programmers Stack Viewers

Interactive mode:

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jrunscript

nashorn>print ('Welcome to Programmers stack');

Welcome to Programmers stack

nashorn> 50+40

90

nashorn> localThread = new java.lang.Thread(function() {print ('Programmers Thread');})

Thread[Thread-0,main]

nashorn>localThread.start()

nashorn>Programmers Thread