Date and Number Formatting
Java programs use the DateFormat.getDateInstance(int, locale) to parse and format dates in a locale-sensitive manner. Java programs use the NumberFormat.getXXXInstance(locale) method, where XXX can be Currency, Number, or Percent, to parse and format numerical values in a locale-sensitive manner.
An application can use date/time and number converters to format dates and numbers in a locale-sensitive manner. For example, a shipping date could be converted as follows:
<h:outputText value="#{cashier.shipDate}"> <f:convertDateTime dateStyle="full"/> </h:outputText>
For information on JavaServer Faces converters, see Using the Standard Converters.