--- a/jdk/src/share/classes/sun/security/jgss/spnego/SpNegoMechFactory.java	Wed Apr 09 09:36:19 2014 -0700
+++ b/jdk/src/share/classes/sun/security/jgss/spnego/SpNegoMechFactory.java	Thu Apr 10 10:31:05 2014 +0800
@@ -96,6 +96,10 @@
         return result;
     }
 
+    public SpNegoMechFactory() {
+        this(GSSCaller.CALLER_UNKNOWN);
+    }
+
     public SpNegoMechFactory(GSSCaller caller) {
         manager = new GSSManagerImpl(caller, false);
         Oid[] mechs = manager.getMechs();