Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

A Callback of this type
is a request to prompt the user for text input; it is essentially a
generic version of NameCallback. A
CallbackHandler should call getPrompt(
)
and should display the returned prompt text to the user. It should
then allow the user to enter text, and provide the option of
selecting the default text returned by getdefaultText(
). When the user has entered text (or selected
the default text) it should pass the user's input to
setText( ).

Figure 19-11. javax.security.auth.callback.TextInputCallback

public class

TextInputCallback implements Callback, Serializable {
// Public Constructors
public

TextInputCallback (String

prompt );
public

TextInputCallback (String

prompt , String

defaultText );
// Public Instance Methods
public String

getDefaultText ( );
public String

getPrompt ( );
public String

getText ( );
public void

setText (String

text );
}