/*
* @(#)Callback.java 1.11 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.security.auth.callback;
/**
* <p> Implementations of this interface are passed to a
* <code>CallbackHandler</code>, 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</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.
*
* @version 1.11, 11/17/05
* @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 { }