Package dev.gmitch215.bytebox.time

Interface ZoneLookup

Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface ZoneLookup
The offset a zone was at an instant.

One function is the whole of what a timezone database is asked, and everything else about a zone can be derived from it: which wall-clock times exist, when the offset last changed, whether daylight saving is in force. IntlZoneRules does that deriving, and takes this so the derivation can be checked against a real timezone database on a JVM rather than only against the platform's.

Since:
1.0.0

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    offsetAt(long epochSecond)
    The offset from UTC at an instant.

  • Method Details

    • offsetAt

      int offsetAt(long epochSecond)
      The offset from UTC at an instant.
      Parameters:
      epochSecond - seconds since the epoch
      Returns:
      the offset in seconds, positive east of Greenwich