FULL PRODUCT VERSION :
java version "1.7.0_40"
Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
Java HotSpot(TM) Client VM (build 24.0-b56, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
Using the code below the application is saving and reading the preferences.
 
Preferences prf = Preferences.userRoot().node("/JavaFXApp1");
prf.putInt("CurrentColor", appCtrl.getIValue());
Preferences prf = Preferences.userRoot().node("/JavaFXApp1");i = prf.getInt("CurrentColor", 0);

The registry key created on line 1 looks like '/Java/F/X/App1' and the value name created on line 2 looks like '/Current/Color'
 The forward slash was even added to the string value: saving 'Programmatically set text' string I see '/Programmatically set text'.
 
This is not isolated to my application. SceneBuilder saves its settings under HKEY_CURRENT_USER\Software\JavaSoft\Prefs\com\oracle\javafx\scenebuilder\/J/V/M/User/Options and its settings are affected too, such as '$/A/P/P/D/I/R\app\logging.properties'


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
call

Preferences prf = Preferences.userRoot().node("/JavaFXApp1");
prf.putInt("CurrentColor", appCtrl.getIValue());

and look in registry for the saved key and value names.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
key/value names saved as supplied.
ACTUAL -
'/' is added in front of every uppercase letter in the key names, value names and in the string values.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
Preferences prf = Preferences.userRoot().node("/JavaFXApp1");
prf.putInt("CurrentColor", appCtrl.getIValue());

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
none - complete show stopper for automated deployment and configuration management.