Can an application provider update their applications as well?
Yes. In the same way that a new version of the JRE can be downloaded and installed, the application provider can allow for newer versions of their applications to be downloaded and run. To do this, the application provider simply changes the version of the application to be run in the JNLP file, for example, from 1.0 to 2.0. The next time a user runs the application, Java Web Start will detect which version of the application should be run, and will automatically download and install the newer application if it is not already present on the client machine. The application provider does not have the ability to proactively and automatically initiate software updates of their application. An updated application will only be downloaded and installed when a user attempts to run the application.
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