Can JavaFX Make a Play for Rich Internet Apps?

The JavaFX Road Map

First revealed at the JavaOne conference in May 2007, JavaFX still is a work in progress. The official JavaFX Web page describes the project as "a powerful client technology for creating rich Internet applications with immersive media and content across the multiple screens of your life." It features the JavaFX Script scripting language for building rich Internet applications for desktop, mobile, TV, and other consumer platforms.

"JavaFX Script, the language of JavaFX, doesn't replace Swing, the core Java GUI toolkit, but provides an alternative way of programming that hopefully will bring Java technology to the masses," according to geekycoder.

A preview version of a software development kit for JavaFX for desktop applications, supporting Windows and Macintosh, was released late last month. Further deliverables are planned. JavaFX for Desktop 1.0, featuring a profile for desktop and browser deployments and a general-release SDK, is due this fall. JavaFX for Mobile 1.0, adding mobile support, is planned for spring 2009 release. TV support also is planned.

The JavaFX runtime is to be distributed with the Java VM. Licensing plans for device manufacturers also are to be revealed next spring. When manufacturers license Java Micro Edition, they will get the JavaFX mobile runtime.

JavaFX offers plug-in capabilities similar to Flash and Silverlight, but it also has a standard runtime -- the Java Virtual Machine -- to run applications outside a browser, Lehrbaum said. Other plug-in technologies will let developers use existing tools such as NetBeans or design tools such as Adobe Photoshop or Illustrator with JavaFX.

Why Sun Thinks JavaFX Will Catch On

With JavaFX, Sun looks to build on the presence of Java on more than 2 billion handsets. Lehrbaum acknowledges that Java has been difficult to use, so those Java-based phones don't offer the kind of rich Internet experience found on Apple's iPhone, Palm's Palm OS, or Microsoft's Windows Mobile. He claims that "JavaFX takes that momentum and the advantages we have with Java but makes it much easier to create rich interactive and immersive experiences."

For example, JavaFX Script offers a declarative scripting language for developers to build interfaces in the way that they think about them, Lehrbaum says. "It matches the way they think about interfaces in their head and is very intuitive," he says.

JavaFX also revives the notion of client-side applets, which had been envisioned as the big win for Java in the mid-1990s. (Instead, Java took root as a dominant server-side technology.) With JavaFX, developers could build applet widgets for information access or a stock ticker.

To enable the applets revival, the Java Standard Edition SE 6 Update 10 release, due this month, will let developers write a single version of an application and run it on the desktop or in a browser. Lehrbaum claims the update will also make applet loading faster. JavaFX, meanwhile, makes it easier to build rich immersive experiences for such applets, he adds.