javax.security.auth.callback (Java SE 14 & JDK 14)

This package provides the classes necessary for services to interact with applications in order to retrieve information (authentication data including usernames or passwords, for example) or to display information (error and warning messages, for example).

Since:: 1.4

Interface Summary
Interface	Description
Callback	Implementations of this interface are passed to a `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.
CallbackHandler	An application implements a `CallbackHandler` and passes it to underlying security services so that they may interact with the application to retrieve specific authentication data, such as usernames and passwords, or to display certain information, such as error and warning messages.

Class Summary
Class	Description
ChoiceCallback	Underlying security services instantiate and pass a `ChoiceCallback` to the `handle` method of a `CallbackHandler` to display a list of choices and to retrieve the selected choice(s).
ConfirmationCallback	Underlying security services instantiate and pass a `ConfirmationCallback` to the `handle` method of a `CallbackHandler` to ask for YES/NO, OK/CANCEL, YES/NO/CANCEL or other similar confirmations.
LanguageCallback	Underlying security services instantiate and pass a `LanguageCallback` to the `handle` method of a `CallbackHandler` to retrieve the `Locale` used for localizing text.
NameCallback	Underlying security services instantiate and pass a `NameCallback` to the `handle` method of a `CallbackHandler` to retrieve name information.
PasswordCallback	Underlying security services instantiate and pass a `PasswordCallback` to the `handle` method of a `CallbackHandler` to retrieve password information.
TextInputCallback	Underlying security services instantiate and pass a `TextInputCallback` to the `handle` method of a `CallbackHandler` to retrieve generic text information.
TextOutputCallback	Underlying security services instantiate and pass a `TextOutputCallback` to the `handle` method of a `CallbackHandler` to display information messages, warning messages and error messages.

Exception Summary

Exception Description

UnsupportedCallbackException
Signals that a CallbackHandler does not recognize a particular Callback.

Package javax.security.auth.callback