In this article, we will learn how to convert ZonedDateTime in different formats using Java 1.8 version or in short how to convert ZonedDateTime into String-form
For String to ZonedDateTime conversion, read Java 8 – How to convert String to ZonedDateTime ?
1. Convert ZonedDateTime in different formats :
- We can convert default ISO_ZONED_DATE_TIME format (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) to any other formats using ZonedDateTime.format() method by passing DateTimeFormatter as argument with required pattern in String-form
- In below illustration, we are using 6 different custom formats as mentioned below,
- DateTimeFormatter.ofPattern(“dd-MM-yyyy HH:mm:ss.nnn VV O“)
- DateTimeFormatter.ofPattern(“dd-MM-yyyy hh:mm:ss.nnn a VV“)
- DateTimeFormatter.ofPattern(“dd.MM.yyyy HH:mm:ss VV O“)
- DateTimeFormatter.ofPattern(“dd-MMM-yyyy hh:mm:ss a VV“)
- DateTimeFormatter.ofPattern(“E dd/MMMM/yyyy HH:mm VV O“)
- DateTimeFormatter.ofPattern(“EEEE MMMM dd, yyyy hh:mm a z VV“)
- Note: If the specified custom format/pattern isn’t in correct form then DateTimeParseException is thrown
2. ZonedDateTime examples in different formats :
2.1 ZonedDateTime to (dd-MM-yyyy HH:mm:ss.nnn VV O) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (dd-MM-yyyy HH:mm:ss.nnn VV O) format
FormatZonedDateTimeExample1.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample1 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("dd-MM-yyyy HH:mm:ss.nnn VV O");
// 3. ZonedDateTime to (dd-MM-yyyy HH:mm:ss.nnn VV O) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (dd-MM-yyyy HH:mm:ss.nnn VV O) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:32:52.852495900+05:30[Asia/Calcutta]
ZonedDateTime to (dd-MM-yyyy HH:mm:ss.nnn VV O) format :-
12-08-2022 15:32:52.852495900 Asia/Calcutta GMT+5:30
2.2 ZonedDateTime to (dd-MM-yyyy hh:mm:ss.nnn a VV) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (dd-MM-yyyy hh:mm:ss.nnn a VV) format
FormatZonedDateTimeExample2.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample2 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("dd-MM-yyyy hh:mm:ss.nnn a VV");
// 3. ZonedDateTime to (dd-MM-yyyy hh:mm:ss.nnn a VV) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (dd-MM-yyyy hh:mm:ss.nnn a VV) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:33:22.661067600+05:30[Asia/Calcutta]
ZonedDateTime to (dd-MM-yyyy hh:mm:ss.nnn a VV) format :-
12-08-2022 03:33:22.661067600 pm Asia/Calcutta
2.3 ZonedDateTime to (dd.MM.yyyy HH:mm:ss VV O) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (dd.MM.yyyy HH:mm:ss VV O) format
FormatZonedDateTimeExample3.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample3 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("dd.MM.yyyy HH:mm:ss VV O");
// 3. ZonedDateTime to (dd.MM.yyyy HH:mm:ss VV O) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (dd.MM.yyyy HH:mm:ss VV O) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:33:54.749760700+05:30[Asia/Calcutta]
ZonedDateTime to (dd.MM.yyyy HH:mm:ss VV O) format :-
12.08.2022 15:33:54 Asia/Calcutta GMT+5:30
2.4 ZonedDateTime to (dd-MMM-yyyy hh:mm:ss a VV) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (dd-MMM-yyyy hh:mm:ss a VV) format
FormatZonedDateTimeExample4.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample4 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("dd-MMM-yyyy hh:mm:ss a VV");
// 3. ZonedDateTime to (dd-MMM-yyyy hh:mm:ss a VV) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (dd-MMM-yyyy hh:mm:ss a VV) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:34:23.791753300+05:30[Asia/Calcutta]
ZonedDateTime to (dd-MMM-yyyy hh:mm:ss a VV) format :-
12-Aug-2022 03:34:23 pm Asia/Calcutta
2.5 ZonedDateTime to (E dd/MMMM/yyyy HH:mm VV O) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (E dd/MMMM/yyyy HH:mm VV O) format
FormatZonedDateTimeExample5.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample5 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("E dd/MMMM/yyyy HH:mm VV O");
// 3. ZonedDateTime to (E dd/MMMM/yyyy HH:mm VV O) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (E dd/MMMM/yyyy HH:mm VV O) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:34:54.744020800+05:30[Asia/Calcutta]
ZonedDateTime to (E dd/MMMM/yyyy HH:mm VV O) format :-
Fri 12/August/2022 15:34 Asia/Calcutta GMT+5:30
2.6 ZonedDateTime to (EEEE MMMM dd, yyyy hh:mm a z VV) format :
- This example converts ZonedDateTime in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to (EEEE MMMM dd, yyyy hh:mm a z VV) format
FormatZonedDateTimeExample6.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeExample6 {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("EEEE MMMM dd, yyyy hh:mm a z VV");
// 3. ZonedDateTime to (EEEE MMMM dd, yyyy hh:mm a z VV) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.print("\nZonedDateTime to (EEEE MMMM dd, yyyy hh:mm a z VV) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:35:23.986304700+05:30[Asia/Calcutta]
ZonedDateTime to (EEEE MMMM dd, yyyy hh:mm a z VV) format :-
Friday August 12, 2022 03:35 pm IST Asia/Calcutta
3. Throws DateTimeParseException for Invalid format :
- If the specified pattern/format is invalid then DateTimeParseException is thrown
- In the below illustration, small-letter ‘m‘ is used for Month which is wrong
- Date notation,
- Capital-letter ‘M‘ should be used for Month
- Small-letter ‘d‘ should be used for Day
- Small-letter ‘y‘ should be used for Year
- Time notation,
- Capital-letter ‘H‘ should be used for 24-hour Hour format
- Small-letter ‘h‘ should be used for 12-hour Hour format
- Small-letter ‘m‘ should be used for Minute
- Small-letter ‘s‘ should be used for Second
- Small-letter ‘n‘ should be used for Nanosecond
FormatZonedDateTimeException.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class FormatZonedDateTimeException {
public static void main(String[] args) {
// 1. get current system date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Current System Date/time is :- \n"
+ zonedDateTime);
// 2. DateTimeFormatter
DateTimeFormatter dateTimeFormatter = DateTimeFormatter
.ofPattern("dd.mmm.yyyy HH:mm:ss.nnn z VV");
// 3. ZonedDateTime to (dd.mmm.yyyy HH:mm:ss.nnn z VV) format in String form
String str = zonedDateTime.format(dateTimeFormatter);
System.out.println("\nZonedDateTime to (dd.mmm.yyyy HH:mm:ss.nnn z VV) format :- \n"
+ str);
}
}
Output:
Current System Date/time is :-
2022-08-12T15:36:34.101240500+05:30[Asia/Calcutta]
Exception in thread "main" java.lang.IllegalArgumentException: Too many pattern letters: m
at java.base/java.time.format.DateTimeFormatterBuilder
.parseField(DateTimeFormatterBuilder.java:2020)
at java.base/java.time.format.DateTimeFormatterBuilder
.parsePattern(DateTimeFormatterBuilder.java:1804)
at java.base/java.time.format.DateTimeFormatterBuilder
.appendPattern(DateTimeFormatterBuilder.java:1772)
at java.base/java.time.format.DateTimeFormatter
.ofPattern(DateTimeFormatter.java:566)
at in.bench.resources.java8.zoneddatetime.examples.FormatZonedDateTimeException
.main(FormatZonedDateTimeException.java:18)
Related Articles:
- Java 8 – ZonedDateTime with method details and examples
- Java 8 – How to get Date, Time and Zone fields from ZonedDateTime ?
- Java 8 – How to form ZonedDateTime passing Date, Time and Zone fields ?
- Java 8 – How to form ZonedDateTime passing LocalDate, LocalTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing LocalDateTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing Instant and ZoneId ?
- Java 8 – How to parse ZonedDateTime in String form ?
- Java 8 – How to convert String to ZonedDateTime ?
- Java 8 – How to convert ZonedDateTime to String ?
- Java 8 – How to convert ZonedDateTime in different formats ?
- Java 8 – How to convert ZonedDateTime in different Format Style ?
- Java 8 – How to convert ZonedDateTime to LocalDateTime ?
- Java 8 – How to convert ZonedDateTime to an OffsetDateTime ?
- Java 8 – How to convert ZonedDateTime to an Instant ?
- Java 8 – How to extract LocalDate and LocalTime and LocalDateTime from ZonedDateTime ?
- Java 8 – How to convert ZonedDateTime to java.util.Date and vice-versa ?
- Java 8 – How to convert ZonedDateTime to java.sql.Timestamp and vice-versa ?
- Java 8 – How to convert ZonedDateTime to Calendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to GregorianCalendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to XMLGregorianCalendar and vice-versa ?
- Java 8 – How to convert java.util.Date to ZonedDateTime in different ways ?
- Java 8 – How to add Date and Time fields to ZonedDateTime ?
- Java 8 – How to subtract Date and Time fields from ZonedDateTime ?
- Java 8 – How to alter Date, Time and Zone fields of ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is Before another ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is After another ZonedDateTime ?
- Java 8 – How to compare two ZonedDateTime instances ?
- Java 8 – How to find difference between two ZonedDateTime using Period & Duration ?
- More Java 8 Date/Time API examples
References:
- https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.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 !!
