public ChoiceCallback(String prompt,
    String[] choices,
    int defaultChoice,
    boolean multipleSelectionsAllowed) 
{
        if (prompt == null || prompt.length() == 0 ||
            choices == null || choices.length == 0 ||
            defaultChoice <  0 || defaultChoice  >= choices.length)
            throw new IllegalArgumentException();
        for (int i = 0; i <  choices.length; i++) {
            if (choices[i] == null || choices[i].length() == 0)
                throw new IllegalArgumentException();
        }
        this.prompt = prompt;
        this.choices = choices;
        this.defaultChoice = defaultChoice;
        this.multipleSelectionsAllowed = multipleSelectionsAllowed;
}

Construct a ChoiceCallback with a prompt, a list of choices, a default choice, and a boolean specifying whether or not multiple selections from the list of choices are allowed.

Parameters:

prompt - the prompt used to describe the list of choices.




choices - the list of choices.




defaultChoice - the choice to be used as the default choice when the list of choices are displayed. This value is represented as an index into the choices array.




multipleSelectionsAllowed - boolean specifying whether or not multiple selections can be made from the list of choices.

Throws:

IllegalArgumentException - if prompt is null, if prompt has a length of 0, if choices is null, if choices has a length of 0, if any element from choices is null, if any element from choices has a length of 0 or if defaultChoice does not fall within the array boundaries of choices.

exception: IllegalArgumentException - if prompt is null, if prompt has a length of 0, if choices is null, if choices has a length of 0, if any element from choices is null, if any element from choices has a length of 0 or if defaultChoice does not fall within the array boundaries of choices.

 public boolean allowMultipleSelections() 
{
        return multipleSelectionsAllowed;
}

Get the boolean determining whether multiple selections from the choices list are allowed.

 public String[] getChoices() 
{
        return choices;
}

Get the list of choices.

 public int getDefaultChoice() 
{
        return defaultChoice;
}

Get the defaultChoice.

 public String getPrompt() 
{
        return prompt;
}

Get the prompt.

 public int[] getSelectedIndexes() 
{
        return selections;
}

Get the selected choices.

 public  void setSelectedIndex(int selection) 
{
        this.selections = new int[1];
        this.selections[0] = selection;
}

Set the selected choice.

 public  void setSelectedIndexes(int[] selections) 
{
        if (!multipleSelectionsAllowed)
            throw new UnsupportedOperationException();
        this.selections = selections;
}

Set the selected choices.