diff --git a/src/macosx/classes/sun/awt/CGraphicsEnvironment.java b/src/macosx/classes/sun/awt/CGraphicsEnvironment.java
index a2319e675f0d65203f252642db74a30a77d3fb0a..a117d99f42c60149c438b4dd727914f406ffad7c 100644
--- a/src/macosx/classes/sun/awt/CGraphicsEnvironment.java
+++ b/src/macosx/classes/sun/awt/CGraphicsEnvironment.java
@@ -181,6 +181,9 @@ public final class CGraphicsEnvironment extends SunGraphicsEnvironment {
             initDevices();
 
             d = devices.get(mainDisplayID);
+            if (d == null) {
+                throw new AWTError("no screen devices");
+            }
         }
         return d;
     }
diff --git a/src/share/classes/sun/java2d/SunGraphicsEnvironment.java b/src/share/classes/sun/java2d/SunGraphicsEnvironment.java
index 724fa2f1d1095f88b6b69a6b67c8f5b7ea1388a2..5bd2d2f99ee13386a85b47ae6765a913ee8d9fc7 100644
--- a/src/share/classes/sun/java2d/SunGraphicsEnvironment.java
+++ b/src/share/classes/sun/java2d/SunGraphicsEnvironment.java
@@ -165,7 +165,11 @@ public abstract class SunGraphicsEnvironment extends GraphicsEnvironment
      * Returns the default screen graphics device.
      */
     public GraphicsDevice getDefaultScreenDevice() {
-        return getScreenDevices()[0];
+        GraphicsDevice[] screens = getScreenDevices();
+        if (screens.length == 0) {
+            throw new AWTError("no screen devices");
+        }
+        return screens[0];
     }
 
     /**
diff --git a/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java b/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java
index 4e1c816fd1802c9730699125b5f549e652e9eaf6..3dece38d457138438ed9c62cdccd723da91f772e 100644
--- a/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java
+++ b/src/solaris/classes/sun/awt/X11GraphicsEnvironment.java
@@ -200,7 +200,12 @@ public class X11GraphicsEnvironment
      * Returns the default screen graphics device.
      */
     public GraphicsDevice getDefaultScreenDevice() {
-        return getScreenDevices()[getDefaultScreenNum()];
+        GraphicsDevice[] screens = getScreenDevices();
+        if (screens.length == 0) {
+            throw new AWTError("no screen devices");
+        }
+        int index = getDefaultScreenNum();
+        return screens[0 < index && index < screens.length ? index : 0];
     }
 
     public boolean isDisplayLocal() {
diff --git a/src/windows/classes/sun/awt/Win32GraphicsEnvironment.java b/src/windows/classes/sun/awt/Win32GraphicsEnvironment.java
index a3a48e2d7b491373b296ba5f7be82b1e2450771f..c3e684b4142c09b6b82184703d069e5b5377db62 100644
--- a/src/windows/classes/sun/awt/Win32GraphicsEnvironment.java
+++ b/src/windows/classes/sun/awt/Win32GraphicsEnvironment.java
@@ -93,7 +93,12 @@ public class Win32GraphicsEnvironment
     protected native int getDefaultScreen();
 
     public GraphicsDevice getDefaultScreenDevice() {
-        return getScreenDevices()[getDefaultScreen()];
+        GraphicsDevice[] screens = getScreenDevices();
+        if (screens.length == 0) {
+            throw new AWTError("no screen devices");
+        }
+        int index = getDefaultScreen();
+        return screens[0 < index && index < screens.length ? index : 0];
     }
 
     /**