javax.security.auth.callback
public interface Callback
Implementations of this interface are passed to a {@link CallbackHandler}, 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.
Callback
implementations do not retrieve or display the
information requested by underlying security services. Callback
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.
See Also: CallbackHandler ChoiceCallback ConfirmationCallback LanguageCallback NameCallback PasswordCallback TextInputCallback TextOutputCallback