/* AuthenticationException.java --
   Copyright (C) 2003, 2004 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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permission to link this library with independent modules to produce an
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package javax.security.sasl;

/**
 * <p>This exception is thrown by a SASL mechanism implementation to indicate
 * that the SASL exchange has failed due to reasons related to authentication,
 * such as an invalid identity, passphrase, or key.</p>
 *
 * <p>Note that the lack of an <code>AuthenticationException</code> does not
 * mean that the failure was not due to an authentication error. A SASL
 * mechanism implementation might throw the more general {@link SaslException}
 * instead of <code>AuthenticationException</code> if it is unable to determine
 * the nature of the failure, or if does not want to disclose the nature of the
 * failure, for example, due to security reasons.</p>
 */
public class AuthenticationException extends SaslException
{

  // Constants and variables
  // -------------------------------------------------------------------------

  // Constructor(s)
  // -------------------------------------------------------------------------

  /**
   * Constructs a new instance of <code>AuthenticationException</code>. The
   * root exception and the detailed message are <code>null</code>.
   */
  public AuthenticationException()
  {
    super();
  }

  /**
   * Constructs a new instance of <code>AuthenticationException</code> with a
   * detailed message. The root exception is <code>null</code>.
   *
   * @param detail a possibly <code>null</code> string containing details of
   * the exception.
   * @see Throwable#getMessage()
   */
  public AuthenticationException(String detail)
  {
    super(detail);
  }

  /**
   * Constructs a new instance of <code>AuthenticationException</code> with a
   * detailed message and a root exception.
   *
   * @param detail a possibly <code>null</code> string containing details of
   * the exception.
   * @param ex a possibly <code>null</code> root exception that caused this
   * exception.
   * @see Throwable#getMessage()
   * @see SaslException#getCause()
   */
  public AuthenticationException(String detail, Throwable ex)
  {
    super(detail, ex);
  }

  // Class methods
  // -------------------------------------------------------------------------

  // Instance methods
  // -------------------------------------------------------------------------
}