Java 8 – How to convert String to ZonedDateTime ?

August 13, 2022 SJ Java 8, Java 8 Date/Time 0

In this article, we will learn how to convert String to ZonedDateTime using different date/time formats in Java 1.8 version

Q) What is the need of converting String to ZonedDateTime ?

  • Generally, whenever we receive any data from web application then it is passed in the form of String
  • But for further processing we need to convert String to ZonedDateTime
  • This article explains about String to ZonedDateTime conversion in different formats

Read also,

1. String to ZonedDateTime conversion:

We will use below formats to convert String to ZonedDateTime,

  1. yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City] (default)
  2. dd-MM-yyyy HH:mm:ss.nnn VV
  3. dd-MM-yyyy hh:mm:ss.nnn a VV
  4. dd.MM.yyyy HH:mm:ss VV
  5. dd-MMM-yyyy hh:mm:ss a VV
  6. E dd/MMMM/yyyy HH:mm VV
  7. EEEE MMMM dd, yyyy hh:mm a VV

Note: for creating above formats we need DateTimeFormatter

2. Convert String to ZonedDateTime examples:

2.1 Convert String in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to ZonedDateTime :

  • This example converts String in default ISO_ZONED_DATE_TIME format to ZonedDateTime

ConvertStringToZonedDateTime1.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;

public class ConvertStringToZonedDateTime1 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "2017-05-29T19:07:34.190912345+05:30[Asia/Calcutta]";


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in default "
				+ "(yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
2017-05-29T19:07:34.190912345+05:30[Asia/Calcutta]

String in default (yyyy-MM-ddTHH:mm:ss.nnn+/-HH:mm[Region/City]) format to ZonedDateTime :- 
2017-05-29T19:07:34.190912345+05:30[Asia/Calcutta]

2.2 Convert String in (dd-MM-yyyy HH:mm:ss.nnn VV) format to ZonedDateTime :

  • This example converts String in (dd-MM-yyyy HH:mm:ss.nnn VV) format to ZonedDateTime

ConvertStringToZonedDateTime2.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime2 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "29-06-2017 19:07:34.190912345 Asia/Calcutta";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("dd-MM-yyyy HH:mm:ss.nnn VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(dd-MM-yyyy HH:mm:ss.nnn VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
29-06-2017 19:07:34.190912345 Asia/Calcutta

String in (dd-MM-yyyy HH:mm:ss.nnn VV) format to ZonedDateTime :- 
2017-06-29T19:07:34.190912345+05:30[Asia/Calcutta]

2.3 Convert String in (dd-MM-yyyy hh:mm:ss.nnn a VV) format to ZonedDateTime :

  • This example converts String in (dd-MM-yyyy hh:mm:ss.nnn a VV) format to ZonedDateTime

ConvertStringToZonedDateTime3.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime3 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "29-06-2017 07:07:34.190912345 pm Asia/Calcutta";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("dd-MM-yyyy hh:mm:ss.nnn a VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(dd-MM-yyyy hh:mm:ss.nnn a VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
29-06-2017 07:07:34.190912345 pm Asia/Calcutta

String in (dd-MM-yyyy hh:mm:ss.nnn a VV) format to ZonedDateTime :- 
2017-06-29T19:07:34.190912345+05:30[Asia/Calcutta]

2.4 Convert String in (dd.MM.yyyy HH:mm:ss VV) format to ZonedDateTime:

  • This example converts String in (dd.MM.yyyy HH:mm:ss VV) format to ZonedDateTime

ConvertStringToZonedDateTime4.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime4 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "29.06.2017 19:07:34 Asia/Dubai";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("dd.MM.yyyy HH:mm:ss VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(dd.MM.yyyy HH:mm:ss VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
29.06.2017 19:07:34 Asia/Dubai

String in (dd.MM.yyyy HH:mm:ss VV) format to ZonedDateTime :- 
2017-06-29T19:07:34+04:00[Asia/Dubai]

2.5 Convert String in (dd-MMM-yyyy hh:mm:ss a VV) format to ZonedDateTime :

  • This example converts String in (dd-MMM-yyyy hh:mm:ss a VV) format to ZonedDateTime

ConvertStringToZonedDateTime5.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime5 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "29-Jun-2017 09:07:34 pm Asia/Dubai";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("dd-MMM-yyyy hh:mm:ss a VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(dd-MMM-yyyy hh:mm:ss a VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
29-Jun-2017 09:07:34 pm Asia/Dubai

String in (dd-MMM-yyyy hh:mm:ss a VV) format to ZonedDateTime :- 
2017-06-29T21:07:34+04:00[Asia/Dubai]

2.6 Convert String in (E dd/MMMM/yyyy HH:mm VV) format to ZonedDateTime :

  • This example converts String in (E dd/MMMM/yyyy HH:mm VV) format to ZonedDateTime

ConvertStringToZonedDateTime6.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime6 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "Fri 28/June/2019 15:07 Europe/Paris";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("E dd/MMMM/yyyy HH:mm VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(E dd/MMMM/yyyy HH:mm VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
Fri 28/June/2019 15:07 Europe/Paris

String in (E dd/MMMM/yyyy HH:mm VV) format to ZonedDateTime :- 
2019-06-28T15:07+02:00[Europe/Paris]

2.7 Convert String in (EEEE MMMM dd, yyyy hh:mm a VV) format to ZonedDateTime :

  • This example converts String in (EEEE MMMM dd, yyyy hh:mm a VV) format to ZonedDateTime

ConvertStringToZonedDateTime7.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ConvertStringToZonedDateTime7 {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "Sunday June 23, 2019 11:07 pm Europe/Paris";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("EEEE MMMM dd, yyyy hh:mm a VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(EEEE MMMM dd, yyyy hh:mm a VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Original String :- 
Sunday June 23, 2019 11:07 pm Europe/Paris

String in (EEEE MMMM dd, yyyy hh:mm a VV) format to ZonedDateTime :- 
2019-06-23T23:07+02:00[Europe/Paris]

3. DateTimeParseException:

  • If the specified String doesn’t match with the specified pattern/format then DateTimeParseException is thrown
  • Use below date/time notation,
    1. a – for am/pm marker
    2. z – regional time-zone like IST or PST or CET
    3. XXX – for offset from GMT/UTC
    4. ss – seconds
    5. mm – minutes
    6. hh – 12-hour format
    7. HH – 24 hour format
    8. y/yyyy– year with all 4 digits
    9. yy – year with last 2 digits
    10. MM – month in numbers
    11. MMM – month in words in short form
    12. MMMM – month in words in full form
    13. dd – date
    14. E/EEE – day of week in short form
    15. EEEE – day of week in full form

StringToZonedDateTimeConversion.java

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class StringToZonedDateTimeConversion {

	public static void main(String[] args) {

		// 1. string
		String strZonedDateTime = "29-06-2017 19:07:34.190912345 Asia/Calcutta";


		// 2. DateTimeFormatter
		DateTimeFormatter dateTimeFormatter = DateTimeFormatter
				.ofPattern("dd-MMM-yyyy HH:mm:ss.nnn VV");


		// 2. parse date/time in String to default ZonedDateTime format
		ZonedDateTime zonedDateTime = ZonedDateTime.parse(strZonedDateTime, dateTimeFormatter);


		// 3. print to console
		System.out.println("Original String :- \n" + strZonedDateTime);
		System.out.print("\nString in "
				+ "(dd-MM-yyyy HH:mm:ss.nnn VV) format to ZonedDateTime :- \n"
				+ zonedDateTime);
	}
}

Output:

Exception in thread "main" java.time.format.DateTimeParseException: 
Text '29-06-2017 19:07:34.190912345 Asia/Calcutta' could not be parsed at index 3
	at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2052)
	at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1954)
	at java.base/java.time.ZonedDateTime.parse(ZonedDateTime.java:600)
	at in.bench.resources.java8.zoneddatetime.examples.StringToZonedDateTimeConversion
.main(StringToZonedDateTimeConversion.java:20)

Related Articles:

References:

Happy Coding !!
Happy Learning !!

Java 8 – How to convert ZonedDateTime in different formats ?
Java 8 – How to parse ZonedDateTime in String form ?

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