Year atDay() method in Java
Last Updated :
03 Feb, 2021
The atDay() method of Year class in Java combines the current year with a day-of-year passed as parameter to it to create a LocalDate.
Syntax:
public LocalDate atDay(int dayOfYear)
Parameter: This method accepts a single parameter dayOfYear. It is the day-of-year to use. It can take values from 1 to 365-366.
Return Value: It returns a Local Date formed by the current year and a date of year passed as parameter to the function.
Exception: This method throws a DateTimeException, if the day of year passed in the parameter is not valid, that is zero or less, 366 or greater or equal to 366 and the current year is not a leap year.
Below programs illustrate the atDay() method of Year in Java:
Program 1:
Java
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
Year thisYear = Year.of( 2017 );
LocalDate date = thisYear.atDay( 31 );
System.out.println(date);
}
}
|
Program 2: To illustrate Exception.
Java
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
Year thisYear = Year.of( 2017 );
try {
LocalDate date = thisYear.atDay( 367 );
System.out.println(date);
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
java.time.DateTimeException: Invalid value for DayOfYear (valid values 1 - 365/366): 367
Reference: https://docs.oracle.com/javase/8/docs/api/java/time/Year.html#atDay-int-
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