Java Dates and Times
Description
Java 8 introduced a new Date-Time API based on IS0-8601 date-time standards.
The Date-Time API uses the calendar system defined in ISO-8601 as the default calendar. This calendar is based on the Gregorian calendar system
The LocalDateTime, ZonedDateTime, and OffsetDateTime in the Date-Time API are all using ISO calendar system.
The Date-Time API uses the Unicode Common Locale Data Repository (CLDR) for the locale data.
The Date-Time API uses the Time-Zone Database (TZDB) for information about time zone.