| Package | Description | 
|---|---|
| java.security | 
 Provides the classes and interfaces for the security framework. 
 | 
| 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). 
 | 
| javax.security.auth.login | 
 This package provides a pluggable authentication framework. 
 | 
| javax.security.auth.spi | 
 This package provides the interface to be used for
 implementing pluggable authentication modules. 
 | 
| javax.security.sasl | 
 Contains class and interfaces for supporting SASL. 
 | 
| Class and Description | 
|---|
| 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 and 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. | 
| UnsupportedCallbackException
 Signals that a  
CallbackHandler does not
 recognize a particular Callback. | 
| Class and Description | 
|---|
| 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 and Description | 
|---|
| 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 and 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). | 
| TextInputCallback
  Underlying security services instantiate and pass a
  
TextInputCallback to the handle
 method of a CallbackHandler to retrieve generic text
 information. | 
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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