23  * questions.
  24  */
  25 
  26 
  27 package javax.security.auth.callback;
  28 
  29 /**
  30  * <p> Implementations of this interface are passed to a
  31  * {@code CallbackHandler}, allowing underlying security services
  32  * the ability to interact with a calling application to retrieve specific
  33  * authentication data such as usernames and passwords, or to display
  34  * certain information, such as error and warning messages.
  35  *
  36  * <p> {@code Callback} implementations do not retrieve or
  37  * display the information requested by underlying security services.
  38  * {@code Callback} implementations simply provide the means
  39  * to pass such requests to applications, and for applications,
  40  * if appropriate, to return requested information back to the
  41  * underlying security services.
  42  *

  43  * @see javax.security.auth.callback.CallbackHandler
  44  * @see javax.security.auth.callback.ChoiceCallback
  45  * @see javax.security.auth.callback.ConfirmationCallback
  46  * @see javax.security.auth.callback.LanguageCallback
  47  * @see javax.security.auth.callback.NameCallback
  48  * @see javax.security.auth.callback.PasswordCallback
  49  * @see javax.security.auth.callback.TextInputCallback
  50  * @see javax.security.auth.callback.TextOutputCallback
  51  */
  52 public interface Callback { }

  23  * questions.
  24  */
  25 
  26 
  27 package javax.security.auth.callback;
  28 
  29 /**
  30  * <p> Implementations of this interface are passed to a
  31  * {@code CallbackHandler}, allowing underlying security services
  32  * the ability to interact with a calling application to retrieve specific
  33  * authentication data such as usernames and passwords, or to display
  34  * certain information, such as error and warning messages.
  35  *
  36  * <p> {@code Callback} implementations do not retrieve or
  37  * display the information requested by underlying security services.
  38  * {@code Callback} implementations simply provide the means
  39  * to pass such requests to applications, and for applications,
  40  * if appropriate, to return requested information back to the
  41  * underlying security services.
  42  *
  43  * @since 1.4
  44  * @see javax.security.auth.callback.CallbackHandler
  45  * @see javax.security.auth.callback.ChoiceCallback
  46  * @see javax.security.auth.callback.ConfirmationCallback
  47  * @see javax.security.auth.callback.LanguageCallback
  48  * @see javax.security.auth.callback.NameCallback
  49  * @see javax.security.auth.callback.PasswordCallback
  50  * @see javax.security.auth.callback.TextInputCallback
  51  * @see javax.security.auth.callback.TextOutputCallback
  52  */
  53 public interface Callback { }