diTii.com Digital News Hub

Sign up with your email address to be the first to know about latest news and more.

I agree to have my personal information transfered to MailChimp (more information)


Java SE 6 Tries Smaller Footprint, JavaScript Support

Having just emerged from a public beta process that began in the spring of 2005, and especially now that Java is an open-source project, developers will find little to be surprised about in Sun’s newest Java SE 6, released yesterday. But one sign that even Java is adapting with the times – besides its smaller size, which early adopters are applauding – is its new support for external scripting engines, which adopters might not be aware of.

For the first time, Java is “aware” of the presence of scripting languages, including JavaScript – which recently became part of the Java bundle. With scripting languages like Asynchronous JavaScript (AJAX) rapidly becoming common in the creation of browser-based front ends, Java SE 6’s new recognition for scripting engines like JavaScript that follow a standard API to provide scriptable, server-driven functionality.

It could change the architecture of Java-based applications going forward, from nuggets of self-contained programs to distributed systems that use Java for the engine, and JavaScript for the user console. (Sun did not develop JavaScript initially; Netscape did, and it’s successor company Mozilla’s JavaScript engine that is being bundled with the new Java.)

Early snippets of JavaScript-supporting Java source code reveal a typically simple mechanism behind this otherwise aesthetically asynchronous concept. First, a newly declared variable of class ScriptEngineManager instantiates an instance of Java’s new manager function.

From there, another variable is set to point to a handle of the first active script engine it sees in memory. With that handle, JavaScript code (or whatever the native code for the engine may be) is passed a string by way of the eval method; the script engine treats this as though it were being invoked immediately, as through a command line. Java’s exception handling mechanism can then catch any errors.

Alternately, the script engine can be set to point to an existing .JS file by declaring a variable of class FileInputStream, with the filename as the sole argument. Some Java developers may have just read the only documentation they’ll ever need on the subject – it’s literally that simple.
Continue for more info….

Java SE 6 Tries Smaller Footprint, JavaScript Support, Java

Share This Story, Choose Your Platform!

Get Latest News

Subscribe to Digital News Hub

Get our daily newsletter about the latest news in the industry.
First Name
Last Name
Email address
Secure and Spam free...