There the 'Advanced' Tab should have an entry related to shortcut creation. You should set the autorisation level to something more permissive than 'Never autorise'.
I guess that should do the job.
If you have any success and/or snapshot, you can share it here.
This can be done if I know
This can be done if I know how to indicate an icon for a command.
For the webstart distribution this should normally be the case, but it seems that for most people the java settings are limiting too much.
I do not have a mac, but from this page (http://macdevelopertips.com/category/java) one can see that the Java configuration can be opened from /Applications/Utilities/Java/Java%20Preferences.app .
There the 'Advanced' Tab should have an entry related to shortcut creation. You should set the autorisation level to something more permissive than 'Never autorise'.
I guess that should do the job.
If you have any success and/or snapshot, you can share it here.