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).
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.
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.
Underlying security services instantiate and pass a
PasswordCallback to the
method of a
CallbackHandler to retrieve password information.