src/java.rmi/share/classes/java/rmi/server/RemoteObject.java

@@ -357,11 +357,11 @@
      * <code>"UnicastServerRef2"</code>, no data is written by the
      * <code>writeExternal</code> method or read by the
      * <code>readExternal</code> method.
      */
     private void writeObject(java.io.ObjectOutputStream out)
-        throws java.io.IOException, java.lang.ClassNotFoundException
+        throws java.io.IOException
     {
         if (ref == null) {
             throw new java.rmi.MarshalException("Invalid remote object");
         } else {
             String refClassName = ref.getRefClass(out);