Using java.awt.Toolkit.getDefaultToolkit().getScreenSize() reflectively causes InaccessibleObjectException

[Rony G. Flatscher]

Experimenting with further scripts indicates that this is a systematic problem whenever the official
APIs return members that are not made available to an unnamed module: e.g. JavaFX some
"com.sun.javafx.collections.VetoableListDecorator" or in a "plain" awt/swing app some
"sun.java2d.SungGraphics2D".

---rony

On 05.01.2017 19:42, Rony G. Flatscher wrote:
> Trying to run a program that gets the screen dimensions using
> java.awt.Toolkit.getDefaultToolkit().getScreenSize() reflectively.
>
> On a 64-bit Ubuntu the returned Toolkit is of type sun.awt.X11.XToolkit. Reflectively invoking its
> method getScreenSize() causes the following exception to be thrown on 9-ea+134:
>
>     java.lang.reflect.InaccessibleObjectException: unable to make member of class sun.awt.SunToolkit
>     accessible: module java.desktop does not export sun.awt to unnamed module ...
>
> A little bit baffled as this is from a script that has been working flawlessly throughout more than
> a decade on various Java versions and which employs documented public methods only (the sun.awt
> object is returned by java.awt.Toolkit). Is this a known "legacy"problem :) that I could circumvent
> somehow or a bug that needs to be reported?
>
> ---rony
>