Returns a locale specific date and time format for the ISO chronology.
!(p)
This returns a formatter that will format or parse a date-time.
The exact format pattern used varies by locale.
!(p)
The locale is determined from the formatter. The formatter returned directly by
this method will use the {@link Locale#getDefault() default FORMAT locale}.
The locale can be controlled using {@link DateTimeFormatter#withLocale(Locale) withLocale(Locale)}
on the result of this method.
!(p)
Note that the localized pattern is looked up lazily.
This {@code DateTimeFormatter} holds the style required and the locale,
looking up the pattern required on demand.
!(p)
The returned formatter has a chronology of ISO set to ensure dates _in
other calendar systems are correctly converted.
It has no override zone and uses the {@link ResolverStyle#SMART SMART} resolver style.
The {@code FULL} and {@code LONG} styles typically require a time-zone.
When formatting using these styles, a {@code ZoneId} must be available,
either by using {@code ZonedDateTime} or {@link DateTimeFormatter#withZone}.
@param dateStyle the date formatter style to obtain, not null
@param timeStyle the time formatter style to obtain, not null
@return the date, time or date-time formatter, not null
Returns a locale specific date and time format for the ISO chronology. !(p) This returns a formatter that will format or parse a date-time. The exact format pattern used varies by locale. !(p) The locale is determined from the formatter. The formatter returned directly by this method will use the {@link Locale#getDefault() default FORMAT locale}. The locale can be controlled using {@link DateTimeFormatter#withLocale(Locale) withLocale(Locale)} on the result of this method. !(p) Note that the localized pattern is looked up lazily. This {@code DateTimeFormatter} holds the style required and the locale, looking up the pattern required on demand. !(p) The returned formatter has a chronology of ISO set to ensure dates _in other calendar systems are correctly converted. It has no override zone and uses the {@link ResolverStyle#SMART SMART} resolver style. The {@code FULL} and {@code LONG} styles typically require a time-zone. When formatting using these styles, a {@code ZoneId} must be available, either by using {@code ZonedDateTime} or {@link DateTimeFormatter#withZone}.
@param dateStyle the date formatter style to obtain, not null @param timeStyle the time formatter style to obtain, not null @return the date, time or date-time formatter, not null