I just looked in the NetBeans Preferences and came to the JavaFX tab … up pops an installer for “JavaFX implementation for MacOS X” with a license that very much looks like GPL … or am I wrong?
The GNU General Public License (GPL)
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USAEveryone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.
…
Skimming over it there seems no exception for commercial software distribution.
Bummer.