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Java 2 Platform EE v1.3: Interface Callback
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javax.security.auth.callback</FONT>
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Interface Callback</H2>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../javax/security/auth/callback/ChoiceCallback.html">ChoiceCallback</A>, <A HREF="../../../../javax/security/auth/callback/ConfirmationCallback.html">ConfirmationCallback</A>, <A HREF="../../../../javax/security/auth/callback/NameCallback.html">NameCallback</A>, <A HREF="../../../../javax/security/auth/callback/TextInputCallback.html">TextInputCallback</A>, <A HREF="../../../../javax/security/auth/callback/LanguageCallback.html">LanguageCallback</A>, <A HREF="../../../../javax/security/auth/callback/PasswordCallback.html">PasswordCallback</A>, <A HREF="../../../../javax/security/auth/callback/TextOutputCallback.html">TextOutputCallback</A></DD>
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<DT>public interface <B>Callback</B></DL>
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<p> Implementations of this interface are passed to a
<code>CallbackHandler</code>, 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.
<p> <code>Callback</code> implementations do not retrieve or
display the information requested by underlying security services.
<code>Callback</code> implementations simply provide the means
to pass such requests to applications, and for applications,
if appropriate, to return requested information back to the
underlying security services.
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<DT><B>See Also: </B><DD><A HREF="../../../../javax/security/auth/callback/CallbackHandler.html"><CODE>CallbackHandler</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/ChoiceCallback.html"><CODE>ChoiceCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/ConfirmationCallback.html"><CODE>ConfirmationCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/LanguageCallback.html"><CODE>LanguageCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/NameCallback.html"><CODE>NameCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/PasswordCallback.html"><CODE>PasswordCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/TextInputCallback.html"><CODE>TextInputCallback</CODE></A>,
<A HREF="../../../../javax/security/auth/callback/TextOutputCallback.html"><CODE>TextOutputCallback</CODE></A></DL>
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