Netbeans and JavaFX

I am new to Netbeans and am only using it for the JavaFX integration (IntelliJ user) so I am not sure if I am dealing with my ignorance of Netbeans or some JavaFX idiosyncrasy.
However, when I try to organize my JavaFX code into package structure (rather than using a single default package) and go to run it I get NoClassDef exceptions on my main class. It looks like netbeans automatically packages up the files into a jar and runs it from a jar. I took a peek inside the generated jar and Netbeans is not maintaining the package structure inside the jar it is just putting all the classes at the root of the jar (hence the NoClassDefs).
How can I get Netbeans to maintain the package structure inside the jar?
Does JavaFX use the "package" keyword the same way as Java does?

Yep, after I was able to get my classes in a package structure (rather than default package) I discovered that.
I couldn't at first get my classes out of the default package. I am spoiled by IntelliJ which changes/adds package statements when you move classes. Netbeans did not automatically add the package statement when I moved from the default package to a package structure. Nor did it warn me that the classes were missing a package statement and/or the package statement didn't match its package location.

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