ZonedDateTime truncatedTo() method in Java with Examples Last Updated : 17 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The truncatedTo() method of a ZonedDateTime class is used to return the value of this ZonedDateTime in the specified unit. This method takes a parameter Unit, which is the Unit in which this ZonedDateTime is to be truncated to. It returns a truncated immutable ZonedDateTime with the value in the specified unit. Syntax: public ZonedDateTime truncatedTo(TemporalUnit unit) Parameters: This method accepts one single parameter unit which is the unit in which this ZonedDateTime is to be truncated to. It should not be null. Return value: This method returns a immutable truncated ZonedDateTime with the value in the specified unit. Exception: This method throws following Exceptions: DateTimeException: if unable to truncate. UnsupportedTemporalTypeException: if the unit is not supported. Below programs illustrate the truncatedTo() method: Program 1: Java // Java program to demonstrate // ZonedDateTime.truncatedTo() method import java.time.*; import java.time.temporal.ChronoUnit; public class GFG { public static void main(String[] args) { // create a ZonedDateTime object ZonedDateTime zonedDT = ZonedDateTime .parse( "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); // print ZonedDateTime System.out.println("ZonedDateTime before" + " truncate: " + zonedDT); // truncate to ChronoUnit.HOURS // means unit smaller than Hour // will be Zero ZonedDateTime returnvalue = zonedDT.truncatedTo(ChronoUnit.HOURS); // print result System.out.println("ZonedDateTime after " + " truncate: " + returnvalue); } } Output: ZonedDateTime before truncate: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta] ZonedDateTime after truncate: 2018-12-06T19:00+05:30[Asia/Calcutta] Program 2: Java // Java program to demonstrate // ZonedDateTime.truncatedTo() method import java.time.*; import java.time.temporal.ChronoUnit; public class GFG { public static void main(String[] args) { // create a ZonedDateTime object ZonedDateTime zonedDT = ZonedDateTime .parse( "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); // print ZonedDateTime System.out.println("ZonedDateTime before" + " truncate: " + zonedDT); // truncate to ChronoUnit.DAYS // means unit smaller than DAY // will be Zero ZonedDateTime returnvalue = zonedDT.truncatedTo(ChronoUnit.DAYS); // print result System.out.println("ZonedDateTime after " + " truncate: " + returnvalue); } } Output: ZonedDateTime before truncate: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta] ZonedDateTime after truncate: 2018-12-06T00:00+05:30[Asia/Calcutta] Reference: https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#withZoneSameInstant(java.time.ZoneId) Comment More infoAdvertise with us Next Article Introduction to Java A AmanSingh2210 Follow Improve Article Tags : Java Java-Functions Java-time package Java-ZonedDateTime Practice Tags : Java Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. 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