Source for

   1: /* -- marker interface for callback classes
   2:    Copyright (C) 2003, Free Software Foundation, Inc.
   4: This file is part of GNU Classpath.
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  14: General Public License for more details.
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  39: package;
  41: /**
  42:  * <p>Implementations of this interface are passed to a {@link CallbackHandler},
  43:  * allowing underlying security services the ability to interact with a calling
  44:  * application to retrieve specific authentication data such as usernames and
  45:  * passwords, or to display certain information, such as error and warning
  46:  * messages.</p>
  47:  *
  48:  * <p><code>Callback</code> implementations do not retrieve or display the
  49:  * information requested by underlying security services. <code>Callback</code>
  50:  * implementations simply provide the means to pass such requests to
  51:  * applications, and for applications, if appropriate, to return requested
  52:  * information back to the underlying security services.</p>
  53:  *
  54:  * @see CallbackHandler
  55:  * @see ChoiceCallback
  56:  * @see ConfirmationCallback
  57:  * @see LanguageCallback
  58:  * @see NameCallback
  59:  * @see PasswordCallback
  60:  * @see TextInputCallback
  61:  * @see TextOutputCallback
  62:  */
  63: public interface Callback {
  64: }