Example: Using a Map to Describe a List of Choices

• To create the list of choices:

  public class CreditCardBean
  {
     . . .
     public Map<String, Integer> getMonthChoices()
     {
        Map<String, Integer> choices = new LinkedHashMap<String, Integer>();
        choices.put("January", 1);
        choices.put("February", 2);
        . . .
        return choices;
     }
  }

• The type of the value property of the component must match the type of the map value
  • For example, creditCard.expirationMonth must be an integer
• If multiple selections are allowed, the type of the value property must be a list or array of matching types