--- a/jdk/src/share/classes/java/awt/TrayIcon.java	Thu Jul 09 15:15:28 2009 -0400
+++ b/jdk/src/share/classes/java/awt/TrayIcon.java	Thu Jul 09 15:18:50 2009 -0400
@@ -143,6 +143,9 @@
      */
     public TrayIcon(Image image) {
         this();
+        if (image == null) {
+            throw new IllegalArgumentException("creating TrayIcon with null Image");
+        }
         setImage(image);
     }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/TrayIcon/CtorTest/CtorTest.java	Thu Jul 09 15:18:50 2009 -0400
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+  @test
+  @bug 6759726
+  @summary TrayIcon constructor throws NPE instead of documented IAE
+  @author Dmitry Cherepanov area=awt.tray
+  @run main CtorTest
+*/
+
+/**
+ * CtorTest.java
+ *
+ * summary:  TrayIcon ctor throws IAE if image is null
+ */
+
+import java.awt.*;
+
+public class CtorTest
+{
+    public static void main(String []s)
+    {
+        boolean isSupported = SystemTray.isSupported();
+        if (isSupported) {
+            try {
+                TrayIcon tray = new TrayIcon(null);
+            } catch(IllegalArgumentException e) {
+                // ctor should throw IAE
+            }
+        }
+    }
+}