Source for javax.security.auth.Destroyable

   1: /* Destroyable.java -- an immutable object that may be destroyed.
   2:    Copyright (C) 2004 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   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.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  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.
  20: 
  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.
  25: 
  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. */
  37: 
  38: 
  39: package javax.security.auth;
  40: 
  41: /**
  42:  * An interface for objects that are immutable but whose sensitive
  43:  * data may be wiped out.
  44:  */
  45: public interface Destroyable
  46: {
  47: 
  48:   /**
  49:    * Destroy this object, clearing all sensitive fields appropriately.
  50:    *
  51:    * @throws DestroyFailedException If this object could not be
  52:    *   destroyed.
  53:    * @throws SecurityException If the caller does not have permission
  54:    *   to destroy this object.
  55:    */
  56:   void destroy() throws DestroyFailedException;
  57: 
  58:   /**
  59:    * Tells whether or not this object has been destroyed.
  60:    *
  61:    * @return True if this object has been destroyed.
  62:    */
  63:   boolean isDestroyed();
  64: }