--- a/src/share/classes/javax/management/modelmbean/DescriptorSupport.java	Thu Sep 20 14:23:18 2012 -0700
+++ b/src/share/classes/javax/management/modelmbean/DescriptorSupport.java	Sun Sep 23 23:43:31 2012 +0400
@@ -1245,13 +1245,12 @@
             return s.substring(1, s.length() - 1);
         }
         final String className = s.substring(1, slash);
+
         final Constructor<?> constr;
         try {
+            ReflectUtil.checkPackageAccess(className);
             final ClassLoader contextClassLoader =
                 Thread.currentThread().getContextClassLoader();
-            if (contextClassLoader == null) {
-                ReflectUtil.checkPackageAccess(className);
-            }
             final Class<?> c =
                 Class.forName(className, false, contextClassLoader);
             constr = c.getConstructor(new Class<?>[] {String.class});