| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| package javax.security.auth.callback; |
| |
| /** |
| * <p> Implementations of this interface are passed to a |
| * {@code 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> {@code Callback} implementations do not retrieve or |
| * display the information requested by underlying security services. |
| * {@code Callback} 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. |
| * |
| * @see javax.security.auth.callback.CallbackHandler |
| * @see javax.security.auth.callback.ChoiceCallback |
| * @see javax.security.auth.callback.ConfirmationCallback |
| * @see javax.security.auth.callback.LanguageCallback |
| * @see javax.security.auth.callback.NameCallback |
| * @see javax.security.auth.callback.PasswordCallback |
| * @see javax.security.auth.callback.TextInputCallback |
| * @see javax.security.auth.callback.TextOutputCallback |
| */ |
| public interface Callback { } |
