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java.lang.Objectcom.devexperts.util.DayUtil
public class DayUtil
A collection of static utility methods for manipulation of int day id, that is the number of days since Unix epoch of January 1, 1970.
Method Summary | |
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static int |
getDayIdByYearMonthDay(int year,
int month,
int day)
Returns day identifier for specified year, month and day in Gregorian calendar. |
static int |
getYearMonthDayByDayId(int dayId)
Returns yyyymmdd integer in Gregorian calendar for a specified day identifier. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static int getDayIdByYearMonthDay(int year, int month, int day)
getDayIdByYearMonthDay(year, month, day) == getDayIdByYearMonthDay(year, month, 0) + day
IllegalArgumentException
- when month is less than 1 or more than 12.public static int getYearMonthDayByDayId(int dayId)
yearSign * (abs(year) * 10000 + month * 100 + day)
, where year,
month, and day are in Gregorian calendar, month is between 1 and 12 inclusive, and day is counted from 1.
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