The following JCK tests fail due to this issue:
api/java_awt/GraphicsDevice/indexTGF.html#ShapeAndTranslucencyForFullScreen[nullShape]
api/java_awt/Window/indexTGF.html#BackgroundGeneral[testNoAlphaFullScreen]
api/java_awt/Window/indexTGF.html#ShapeGeneral[nullShapeForFullScreen]
The following code causes NPE on Solaris.
JDK: 7 build 74
Platform: Solaris x86
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import java.awt.*;

public class NPE {

    public static void main(String[] args) {
        GraphicsDevice[] devices = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
        devices[0].setFullScreenWindow(new Frame());
        devices[0].setFullScreenWindow(null);
    }
}
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<db158260@zenit(pts/28).278> /set/java/re/j2se/7/promoted/latest/binaries/solaris-i586/bin/java NPE
Exception in thread "main" java.lang.NullPointerException
        at sun.awt.X11GraphicsDevice.setDisplayMode(X11GraphicsDevice.java:388)
        at sun.awt.X11GraphicsDevice.setFullScreenWindow(X11GraphicsDevice.java:330)
        at NPE.main(NPE.java:10)