Search code examples
javajava-web-start

How to upgrade the Java Web Start's JNLP launcher file

Does Java Web Start provide a means to upgrade the JNLP file?

Java Web Start is great, but how does one ensure the JNLP launcher file is upgraded? I would like to avoid the extra step of having the user launch the application from the web page every time.

I am not sure how the Java Web Start short-cut feature works (has not worked for me) so I may be over-looking something. Perhaps a HTTP short-cut to the JNLP file would work though. Unfortunately, that would not allow for the HTML5 offline feature to work.

Solution

  • The update works as follows.

    The JWS compares the version of JNLP it down with that stated in the codebase.

    If you have something different it downloads the new version automatically.

    Try this:

    <update check="timeout" policy="prompt-update"/>