The withDayOfMonth() method of LocalDate class in Java returns a copy of this LocalDate with the day-of-month altered.
Syntax:
public LocalDate withDayOfMonth(int dayOfMonth)
Parameter: This method accepts a mandatory parameter dayOfMonth whicthe day-of-month to set in the result, from 1 to 28-31.
Returns: The function returns a LocalDate based on this date with the requested day, not null.
Exceptions: The function throws a DateTimeException when the day of the month value is invalid.
Below programs illustrate the LocalDate.withDayOfMonth() method:
Program 1:
// Program to illustrate the withDayOfMonth() method import java.util.*;import java.time.*; public class GfG { public static void main(String[] args) { // Parses the date LocalDate dt1 = LocalDate.parse("2018-12-07"); LocalDate result = dt1.withDayOfMonth(01); // Prints the date with year System.out.println("The date with day of the month is: " + result); }} |
Output:
The date with day of the month is: 2018-12-01
Program 2:
// Program to illustrate the withDayOfMonth() method// Exceptionsimport java.util.*;import java.time.*;import java.time.temporal.ChronoField; public class GfG { public static void main(String[] args) { try { // Parses the date LocalDate dt1 = LocalDate.parse("2018-12-07"); LocalDate result = dt1.withDayOfMonth(35); // Prints the date with year System.out.println("The date with day of the month is: " + result); } catch (Exception e) { System.out.println(e); } }} |
Output:
java.time.DateTimeException: Invalid value for DayOfMonth (valid values 1 - 28/31): 35
Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#withDayOfMonth(int)
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