In this article, we will learn how to convert LocalTime to ZonedDateTime by adding/combining date & zone informations using atDate() & atZone() methods provided in Java 1.8 version
For ZonedDateTime to LocalTime conversion, read Java 8 – How to extract LocalDate and LocalTime and LocalDateTime from ZonedDateTime ?
Convert LocalTime to ZonedDateTime :
Direct conversion between LocalTime and ZonedDateTime isn’t possible hence convert LocalTime to LocalDateTime using atDate() method and then convert LocalDateTime to ZonedDateTime using atZone() method
- First, convert LocalTime to LocalDateTime using atDate() method –
- atDate(LocalDate) – This method combines invoking LocalTime with a provided LocalDate to create a
LocalDateTime
- atDate(LocalDate) – This method combines invoking LocalTime with a provided LocalDate to create a
- Second, convert LocalDateTime to ZonedDateTime using atZone() method –
- atZone(ZoneId) – This method combines invoking date-time with a time-zone to create a ZonedDateTime
ConvertLocalTimeToZonedDateTime.java
package in.bench.resources.java8.localtime.examples;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
public class ConvertLocalTimeToZonedDateTime {
public static void main(String[] args) {
// 1. get current system time
LocalTime localTime = LocalTime.now();
System.out.println("Current System Time is :- \n"
+ localTime);
// 2. get current system date
LocalDate localDate = LocalDate.now();
System.out.println("\nCurrent System Date is :- \n"
+ localDate);
// 3. First, convert LocalTime to LocalDateTime using atDate() - add current system date
LocalDateTime localDateTime = localTime.atDate(localDate);
System.out.println("\nLocalDateTime is :- \n"
+ localDateTime);
// 4. default zone
ZoneId zoneId = ZoneId.systemDefault();
System.out.println("\nDefault Zone is :- \n"
+ zoneId);
// 5. First, convert LocalTime -> LocalDateTime -> ZonedDateTime
ZonedDateTime zonedDateTime = localDateTime.atZone(zoneId);
System.out.print("\nConversion of LocalTime to ZonedDateTime using atZone() is :- \n"
+ zonedDateTime);
}
}
Output:
Current System Time is :-
19:48:39.599350900
Current System Date is :-
2022-08-23
LocalDateTime is :-
2022-08-23T19:48:39.599350900
Default Zone is :-
Asia/Calcutta
Conversion of LocalTime to ZonedDateTime using atZone() is :-
2022-08-23T19:48:39.599350900+05:30[Asia/Calcutta]
Related Articles:
- Java 8 – LocalTime with method details and examples
- Java 8 – How to get Hour, Minute and Second fields from LocalTime ?
- Java 8 – How to form LocalTime passing Hour, Minute and Second fields ?
- Java 8 – How to parse LocalTime in String form ?
- Java 8 – How to convert String to LocalTime ?
- Java 8 – How to convert LocalTime to String ?
- Java 8 – How to convert LocalTime in different formats ?
- Java 8 – How to convert LocalTime in different Format Style ?
- Java 8 – How to convert LocalTime to LocalDateTime ?
- Java 8 – How to convert LocalTime to ZonedDateTime ?
- Java 8 – How to convert LocalTime to an OffsetDateTime ?
- Java 8 – How to convert LocalTime to an Instant ?
- Java 8 – How to convert LocalTime to an OffsetTime ?
- Java 8 – How to convert LocalTime to Seconds and vice-versa ?
- Java 8 – How to convert LocalTime to Nanoseconds and vice-versa ?
- Java 8 – How to convert LocalTime to java.util.Date and vice-versa ?
- Java 8 – How to convert LocalTime to java.sql.Timestamp and vice-versa ?
- Java 8 – How to convert LocalTime to Calendar and vice-versa ?
- Java 8 – How to convert LocalTime to GregorianCalendar and vice-versa ?
- Java 8 – How to convert LocalTime to XMLGregorianCalendar and vice-versa ?
- Java 8 – How to convert java.util.Date to LocalTime in different ways ?
- Java 8 – How to add Hour, Minute and Second fields to LocalTime ?
- Java 8 – How to subtract Hour, Minute and Second fields from LocalTime ?
- Java 8 – How to alter Hour, Minute and Second fields of LocalTime ?
- Java 8 – How to check whether a LocalTime is Before another LocalTime ?
- Java 8 – How to check whether a LocalTime is After another LocalTime ?
- Java 8 – How to compare two LocalTime instances ?
- Java 8 – How to find time duration between two LocalTime instances ?
- Java 8 – What are all the Temporal Fields supported by LocalTime ?
- Java 8 – What are all the Temporal Units supported by LocalTime ?
- Java 9 – Find difference between two LocalTime instances upto nanosecond precision ?
- More Java 8 Date/Time API examples
References:
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/ZoneId.html
- https://docs.oracle.com/javase/8/docs/api/java/time/ZoneOffset.html
- https://docs.oracle.com/javase/7/docs/api/java/util/Date.html
- https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html
Happy Coding !!
Happy Learning !!