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 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);
}
} |
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 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);
}
} |
ZonedDateTime before truncate: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta] ZonedDateTime after truncate: 2018-12-06T00:00+05:30[Asia/Calcutta]