javax.security.auth.callback (Java SE 26 & JDK 26)
Description: declaration: module: java.base, package: javax.security.auth.callback
Keywords: javax.security.auth.callback package

# Package javax.security.auth.callback

package javax.security.auth.callback
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

- Related Packages
  Module
  Package
  Description
  java.base
  javax.security.auth
  This package provides a framework for authentication and authorization.
  java.security.jgss
  javax.security.auth.kerberos
  This package contains utility classes related to the Kerberos network authentication protocol.
  java.base
  javax.security.auth.login
  This package provides a pluggable authentication framework.
  java.base
  javax.security.auth.spi
  This package provides the interface to be used for implementing pluggable authentication modules.
  java.base
  javax.security.auth.x500
  This package contains the classes that should be used to store X500 Principal and X500 Private Credentials in a Subject.
- Class
  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.
  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.
  UnsupportedCallbackException
  Signals that a `CallbackHandler` does not recognize a particular `Callback`.