There is a plugin for maven to package Java Webstart application. It’s the webstart maven plugin.

To create the jnlp file, the documentation suggests to launch:

mvn webstart:jnlp

However, sometimes I got the following error message:

<jnlp> configuration element missing.

To workaround this, just launch the same command with the explicit plugin name:

 mvn org.codehaus.mojo.webstart:webstart-maven-plugin:jnlp

This solves the error.

I guess, this is due to a mismatch between webstart plugin. I should reset my plugin repository and make a try.