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diff --git a/libjava/classpath/javax/rmi/CORBA/PortableRemoteObjectDelegate.java b/libjava/classpath/javax/rmi/CORBA/PortableRemoteObjectDelegate.java
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+/* PortableRemoteObjectDelegate.java -- Interface supporting PortableRemoteObject
+   Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.rmi.CORBA;
+
+import java.rmi.NoSuchObjectException;
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+
+/**
+ * A delegate, implementing the functionality, provided by the
+ * {@link PortableRemoteObject}.
+ *
+ * The default delegate can be altered by setting the system property
+ * "javax.rmi.CORBA.PortableRemoteObjectClass" to the name of the alternative
+ * class that must implement {@link PortableRemoteObjectDelegate}.
+ *
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public interface PortableRemoteObjectDelegate
+{
+  /**
+   * <p>
+   * Makes the remote object <code>target</code> ready for remote
+   * communication using the same communications runtime as for the passed
+   * <code>source</code> parameter. Connection normally happens implicitly
+   * when the object is sent or received as an argument on a remote method call.
+   * </p>
+   * <p>
+   * The target object is connected to the same ORB as source by calling the
+   * {@link Stub#connect} if it is a stub or by associating its tie with an ORB
+   * if it is an implementation object.
+   * </p>
+   *
+   * @param target the target object that may be either an RMI/IDL stub or an
+   * exported RMI/IDL implementation object
+   * @param source the source object may also be either an RMI/IDL stub or an
+   * exported RMI/IDL implementation object.
+   *
+   * @throws RemoteException if the target is already connected to another ORB.
+   */
+  void connect(Remote target, Remote source)
+    throws RemoteException;
+
+  /**
+   * Register the passed object with the ORB runtimes, making it remotely
+   * accessible. When called on jre with no objects exported, creates a
+   * non-daemon thread that prevents jre from terminating until all objects are
+   * unexported. Also, such object cannot be collected by garbage collector.
+   * This is usually impemented via {@link Util#unexportObject}
+   *
+   * @param obj the object to export.
+   *
+   * @throws RemoteException
+   */
+  void exportObject(Remote obj)
+    throws RemoteException;
+
+  /**
+   * Narrows the passed object to conform to the given interface or IDL type.
+   * This method may return different instance and cannot be replaced by the
+   * direct cast.
+   *
+   * @param narrowFrom an object to narrow.
+   * @param narrowTo a type to that the object must be narrowed.
+   *
+   * @return On success, an object of type narrowTo or null, if narrowFrom =
+   * null.
+   *
+   * @throws ClassCastException if no narrowing is possible.
+   */
+  Object narrow(Object narrowFrom, Class narrowTo)
+    throws ClassCastException;
+
+  /**
+   * Takes a server implementation object and returns a stub object that can be
+   * used to access that server object (target). If the target is connected, the
+   * returned stub is also connected to the same ORB. If the target is
+   * unconnected, the returned stub is unconnected.
+   *
+   * @param obj a server side object.
+   * @return a stub object that can be used to access that server object.
+   *
+   * @throws NoSuchObjectException if a stub cannot be located for the given
+   * target.
+   */
+  Remote toStub(Remote obj)
+    throws NoSuchObjectException;
+
+  /**
+   * Deregister a currently exported server object from the ORB runtimes. The
+   * object to becomes available for garbage collection. This is usually
+   * impemented via {@link Util#unexportObject}
+   *
+   * @param obj the object to unexport.
+   *
+   * @throws NoSuchObjectException if the passed object is not currently
+   * exported.
+   */
+  void unexportObject(Remote obj)
+    throws NoSuchObjectException;
+}