Obtains a user ID, assigns to it a reference to the WebLogoutCallback object (Callback implementation class), and passes it to the login module offered by the integrated user management framework.

public void handle(Callback[] callbacks)
  throws UnsupportedCallbackException;

callbacks:

If this parameter specifies a reference to the WebLogoutCallback object, user information is set and returned. If it specifies a reference to another object, UnsupportedCallbackException occurs.

java.io.IOException:

HttpServletRequest does not contain the results of Web server-based authentication.

javax.security.auth.callback.UnsupportedCallbackException:

An unsupported callbacks reference is specified.

Set a value for callbacks so that this value can be returned. This method does not return a value.