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8143413: add toEpochSecond methods for efficient access

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Reviewed-by: rriggs, scolebourne
This commit is contained in:
Nadeesh TV 2015-12-23 13:19:58 -05:00
parent 1a8918d371
commit 6a9a5a80ea
6 changed files with 149 additions and 1 deletions
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24
jdk/src/java.base/share/classes/java/time/LocalTime.java
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@ -1490,6 +1490,30 @@ public final class LocalTime
return total;
}
/**
* Converts this {@code LocalTime} to the number of seconds since the epoch
* of 1970-01-01T00:00:00Z.
* <p>
* This combines this local time with the specified date and
* offset to calculate the epoch-second value, which is the
* number of elapsed seconds from 1970-01-01T00:00:00Z.
* Instants on the time-line after the epoch are positive, earlier
* are negative.
*
* @param date the local date, not null
* @param offset the zone offset, not null
* @return the number of seconds since the epoch of 1970-01-01T00:00:00Z, may be negative
* @since 9
*/
public long toEpochSecond(LocalDate date, ZoneOffset offset) {
Objects.requireNonNull(date, "date");
Objects.requireNonNull(offset, "offset");
long epochDay = date.toEpochDay();
long secs = epochDay * 86400 + toSecondOfDay();
secs -= offset.getTotalSeconds();
return secs;
}
//-----------------------------------------------------------------------
/**
* Compares this time to another time.