Java Web Start is a helper application that becomes associated with a Web browser. When a user clicks on a link that points to a special launch file (JNLP file), it causes the browser to launch Java Web Start, which then automatically downloads, caches, and runs the given Java Technology-based application. The entire process is typically completed without requiring any user interaction, except for the initial single click.
To build a JNLP application:
Depending on whether you have set up the module suite project as a standalone application, do the following:
The IDE builds a jnlp folder in your build folder and adds a master.jnlp file in your main project folder. Open the Files window to see the JNLP file and the folder within the build folder.