| /* | |
| * 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. | |
| * | |
| * @since 1.4 | |
| * @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 { } |