--- a/jdk/src/solaris/native/sun/awt/awt_GraphicsEnv.c	Fri Oct 12 14:47:26 2012 -0700
+++ b/jdk/src/solaris/native/sun/awt/awt_GraphicsEnv.c	Tue Oct 16 20:11:19 2012 +0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -753,7 +753,7 @@
                      sizeof(errmsg),
                      "Can't connect to X11 window server using '%s' as the value of the DISPLAY variable.",
                      (getenv("DISPLAY") == NULL) ? ":0.0" : getenv("DISPLAY"));
-        JNU_ThrowInternalError(env, errmsg);
+        JNU_ThrowByName(env, "java/awt/AWTError", errmsg);
         return NULL;
     }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/Toolkit/BadDisplayTest/BadDisplayTest.java	Tue Oct 16 20:11:19 2012 +0400
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * @test
+ * @summary Test that Toolkit.getDefaultToolkit throws AWTError exception if bad DISPLAY variable was set
+ * @bug 6818083
+ *
+ * @run shell/timeout=240 BadDisplayTest.sh
+ */
+
+import java.awt.*;
+
+public class BadDisplayTest{
+   public static void main(String[] args) {
+
+        Throwable th = null;
+        try {
+            Toolkit.getDefaultToolkit();
+        } catch (Throwable x) {
+            th = x;
+        }
+        if ( !(th instanceof AWTError)) {
+            System.exit(1);
+        }
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/Toolkit/BadDisplayTest/BadDisplayTest.sh	Tue Oct 16 20:11:19 2012 +0400
@@ -0,0 +1,42 @@
+# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+
+${TESTJAVA}/bin/javac -cp ${TESTSRC} -d . ${TESTSRC}/BadDisplayTest.java
+
+
+export DISPLAY=
+
+OS=`uname -s`
+case "$OS" in
+  SunOS )
+    ${TESTJAVA}/bin/java BadDisplayTest
+    ;;
+  Linux )
+    ${TESTJAVA}/bin/java BadDisplayTest
+     ;;
+  * )
+    echo "Unsupported System: ${OS}"
+    exit 0;
+    ;;
+esac
+
+exit $?
+