Understanding the com.sun.* APIs being (ab)used by the community

Dr. Michael Paus mp at jugs.org
Fri Jun 5 09:18:08 UTC 2015

As nobody has stated it explicitly so far I would like to ask what will 
to classes in Java9 which access methods that are within the javafx 
namespace but
are declared private? Will code like this still work or not?

     public static double getPixelScale(Screen screen) throws 
NoSuchMethodException, SecurityException, IllegalAccessException, 
IllegalArgumentException, InvocationTargetException {
         Method m = Screen.class.getDeclaredMethod("getScale");
         return ((Float) m.invoke(screen)).doubleValue();

This hack for example is currently necessary because there is no other 
way to get at
the current pixel scale of a HiDPI screen.

More information about the openjfx-dev mailing list