Packages and Packaging - Java

Java Reference

In-Depth Information

Figure 21-10. Unverifiable certificate warning

Finally, make links to your application's JNLP file in the web page and, optionally, a down-

load link for JWS itself. JWS is a compiled program that must be loaded before the user can

download any JWS-enabled applications; it runs as a “helper application” for the browsers.

You can download it as a binary program from the JWS home page. In theory, you could

write your own implementation of this helper from the JNLP Specification, if you needed to.

Actually, if the user has JWS installed, you don't need the download link; if he doesn't, the

Launch link does not function correctly. The Developer's Guide shows how you can use

client-side HTML scripting (JavaScript or VBScript) to make only one of these links appear.

The Launch link must refer to the JNLP file:

If you have JWS installed, you can <a href="jabadex.jnlp">launch JabaDex<</a>

If not, you should

read about Java Web Start</a>.

You should now be ready to use your application in a downloadable fashion!