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Rich Internet Application
 

Adobe Flash

This is another major tool to develop RIA as this technology is cross-platform and quite powerful to create an application user interface. Flash user interface can be compiled by MXML (a XML based interface description language), through using Adobe Flex tool. Adobe is currently working on providing a more powerful platform with the product Adobe AIR, a combo technology of HTMLs (including Ajax applications) Flash player based applications and PDFs.

OpenLaszlo

OpenLaszlo is an open source rich Internet application framework, which was developed by Laszlo Systems Inc.. The OpenLaszlo server



compiles programs from LZX language (a mixture of XML tags and JavaScript) into either DHTML (commonly known as AJAX now) or Adobe Flash bytecode. At present it is upporting Flash7 and Flash8. OpenLaszlo is the only rich Internet application platform, which can compile two different runtimes of same code base.

Windows Presentation Foundation and Silverlight

Microsoft has launched Windows Presentation Foundation (WPF) with .NET 3.0 Framework that provides a way to build single-platform



 

applications having some similarities to RIAs that uses XAML and programming languages like C# and Visual Basic. Besides this, Microsoft has announced to launch Silverlight that will provide a subset of WPF functionality on devices and other platforms.

ActiveX Controls

Inclusion of ActiveX controls into HTML is a very powerful mean to develop rich Internet applications, but they have no guarantee of running it on Internet Explorer properly. Many times they can break the sandbox model. This



makes it a suitable tool to target to manufacture computer viruses and malware.

Curl 5.0, Rebol 2.6 and Seaside for Smalltalk

There are three alternatives of Java and the JVM are available in the RIA developing world. These are: Curl, Rebol and Smalltalk. All these are abstract machines that are available in various forms. Curl facilitates Client-side
persistent data while Rebol does not need a browser and Seaside uses a minor extension to Smalltalk to provide a much richer web experience for Smalltalk. All three alternatives are far more mature than more familiar options and are as old or older than Java and the JVM.

Oct 2007 | Java Jazz Up | 66
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