code: static final public DateFormat getInstance(Calendar cal, ULocale locale) {
          return getDateTimeInstance(cal, SHORT, SHORT, locale);
      }
docs: Returns a date/time formatter that uses the SHORT style
  for both the date and the time.
  
  @param cal   The calendar system for which a date/time format is desired.
  @param locale The locale for which the date/time format is desired.
  @hide draft / provisional / internal are hidden on Android