java network programming

 Update distributed applications

A comparison of auto-updating solutions for thick Java clients

hick and thin clients each have major strengths and weaknesses when compared to each other. Often, the strength of one is the weakness of the other. In general, thick clients are functionally rich but difficult to deploy, while thin clients are less functionally rich but easy to deploy and manage. Each approach attempts to gain the other's strengths without sacrificing its own. Deployment solutions like Sun Microsystems' Java Network Launching Protocol (JNLP) are gaining ground by allowing developers to control deployment and maintenance of thick-client applications running locally on users' desktops. This thick-client approach combines the best of both worlds. This approach, however, requires a fair amount of infrastructure in the form of a deployment solution.

A deployment solution is a complete architecture for installing and maintaining an application for its entire lifecycle. This breaks down into two sections, installation and maintenance. Installation is a package that sets up an application for the first time. Typical installations distribute installation executables via the Web or a CD. Maintaining an application assumes that the application is already installed and is being updated. Maintenance includes pushing new application versions, bug fixes, and resources. Application maintenance can be accomplished by distributing update installs or patches to the previous installation. Maintenance can also be accomplished by integrating a maintenance solution into the application development and deployment process to automatically maintain the application. I will refer to this maintenance as auto-updating from now on.

Full Article: http://www.javaworld.com/javaworld/jw-11-2002/jw-1122-autoupdate.html

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