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);  
}