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diff --git a/libjava/javax/security/auth/callback/Callback.java b/libjava/javax/security/auth/callback/Callback.java
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+/* Callback.java -- marker interface for callback classes
+   Copyright (C) 2003, 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.security.auth.callback;
+
+/**
+ * <p>Implementations of this interface are passed to a {@link CallbackHandler},
+ * allowing underlying security services the ability to interact with a calling
+ * application to retrieve specific authentication data such as usernames and
+ * passwords, or to display certain information, such as error and warning
+ * messages.</p>
+ *
+ * <p><code>Callback</code> implementations do not retrieve or display the
+ * information requested by underlying security services. <code>Callback</code>
+ * implementations simply provide the means to pass such requests to
+ * applications, and for applications, if appropriate, to return requested
+ * information back to the underlying security services.</p>
+ *
+ * @see CallbackHandler
+ * @see ChoiceCallback
+ * @see ConfirmationCallback
+ * @see LanguageCallback
+ * @see NameCallback
+ * @see PasswordCallback
+ * @see TextInputCallback
+ * @see TextOutputCallback
+ * @version $Revision: 1.1 $
+ */
+public interface Callback {
+}