--- old/jdk/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java	2013-09-23 21:56:05.477603000 +0400
+++ new/jdk/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java	2013-09-23 21:56:04.989575100 +0400
@@ -200,7 +200,9 @@
      * Returns the default screen graphics device.
      */
     public GraphicsDevice getDefaultScreenDevice() {
-        return getScreenDevices()[getDefaultScreenNum()];
+        GraphicsDevice[] screens = getScreenDevices();
+        int index = getDefaultScreenNum();
+        return screens[0 < index && index < screens.length ? index : 0];
     }
 
     public boolean isDisplayLocal() {