OffsetDateTime withHour() method in Java with examples Last Updated : 17 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The withHour() method of OffsetDateTime class in Java returns a copy of this OffsetDateTime with the hour of the day altered as specified in the parameter. Syntax: public OffsetDateTime withHour(int hour) Parameter: This method accepts a single parameter hour which specifies the hour of the day to be set in the result which can range from 0 to 23. Return Value: It returns a OffsetDateTime based on this date with the requested hour of the day and not null. Exceptions: The program throws a DateTimeException when the hour of the day value is invalid or if the day-of-year is invalid. Below programs illustrate the withHour() method: Program 1: Java // Java program to demonstrate the withHour() method import java.time.OffsetDateTime; import java.time.ZonedDateTime; public class GFG { public static void main(String[] args) { // Parses the date1 OffsetDateTime date1 = OffsetDateTime .parse( "2018-12-12T13:30:30+05:00"); // Prints dates System.out.println("Date1: " + date1); // Changes the hour of day System.out.println("Date1 after altering hour of the day: " + date1.withHour(20)); } } Output: Date1: 2018-12-12T13:30:30+05:00 Date1 after altering hour of the day: 2018-12-12T20:30:30+05:00 Program 2: Java // Java program to demonstrate the withHour() method import java.time.OffsetDateTime; public class GFG { public static void main(String[] args) { try { // Parses the date1 OffsetDateTime date1 = OffsetDateTime .parse( "2018-12-12T13:30:30+05:00"); // Prints dates System.out.println("Date1: " + date1); // Changes the hour of day System.out.println("Date1 after altering hour of the day: " + date1.withHour(27)); } catch (Exception e) { System.out.println("Exception: " + e); } } } Output: Date1: 2018-12-12T13:30:30+05:00 Exception: java.time.DateTimeException: Invalid value for HourOfDay (valid values 0 - 23): 27 Reference: https://docs.oracle.com/javase/10/docs/api/java/time/OffsetDateTime.html#withHour(int) Comment More infoAdvertise with us Next Article OffsetDateTime withHour() method in Java with examples gopaldave Follow Improve Article Tags : Java Java-Functions Java-time package Java-OffsetDateTime Practice Tags : Java Similar Reads OffsetDateTime with() Method in Java with Examples In OffsetDateTime class, there are two types of with() method depending upon the parameters passed to it. with(TemporalAdjuster adjuster) with(TemporalAdjuster adjuster) method of the OffsetDateTime class used to adjusted this OffsetDateTime using TemporalAdjuster and after adjustment returns the co 3 min read OffsetDateTime withNano() method in Java with examples The withNano() method of OffsetDateTime class in Java returns a copy of this OffsetDateTime with the nano-of-second altered as specified in the parameter. 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