In this article, we will learn how to form LocalDateTime passing Date & Time fields using different methods provided in Java 1.8 version
Form LocalDateTime passing Date & Time Fields :
- LocalDateTime.of() method returns LocalDateTime passing Date (Day/Month/Year) and Time (Hour/Minute/Second/Nanosecond) fields
- There are 7 variants of LocalDateTime.of() methods –
- LocalDateTime.of(year, month, dayOfMonth, hour, minute) –
- Obtains an instance of LocalDateTime from year, month, day, hour and minute
- Setting the second and nanosecond to zero
- LocalDateTime.of(year, month, dayOfMonth, hour, minute, second) –
- Obtains an instance of LocalDateTime from year, month, day, hour, minute and second
- Setting the nanosecond to zero
- LocalDateTime.of(year, month, dayOfMonth, hour, minute, second, nanoOfSecond) –
- Obtains an instance of LocalDateTime from year, month, day, hour, minute, second and nanosecond
- LocalDateTime.of(year, Month, dayOfMonth, hour, minute) –
- Obtains an instance of LocalDateTime from year, month, day, hour and minute
- Setting the second and nanosecond to zero
- LocalDateTime.of(year, Month, dayOfMonth, hour, minute, second) –
- Obtains an instance of LocalDateTime from year, month, day, hour, minute and second
- Setting the nanosecond to zero
- LocalDateTime.of(year, Month, dayOfMonth, hour, minute, second, nanoOfSecond) –
- Obtains an instance of LocalDateTime from year, month, day, hour, minute, second and nanosecond
- LocalDateTime.of(LocalDate, LocalTime) –
- Obtains an instance of LocalDateTime from a date/LocalDate and time/LocalTime
- LocalDateTime.of(year, month, dayOfMonth, hour, minute) –
- Finally, print LocalDateTime in different formatted style like SHORT & MEDIUM to the console
FormLocalDateTime.java
package in.bench.resources.java8.localdatetime.examples;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.Month;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
public class FormLocalDateTime {
public static void main(String[] args) {
// 1. form LocalDateTime passing Date(year/month/day) & Time(hour/minute)
LocalDateTime localDateTime1 = LocalDateTime.of(2019, 9, 26, 11, 35);
System.out.println("LocalDateTime :- " + localDateTime1);
// 1.1 format LocalDateTime1 in FormatStyle.SHORT
String formattedStr1 = localDateTime1.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT));
System.out.println("LocalDateTime in FormatStyle.SHORT :- " + formattedStr1);
// 2. form LocalDateTime passing Date(year/month/day) & Time(hour/minute/second)
LocalDateTime localDateTime2 = LocalDateTime.of(2019, 9, 26, 11, 35, 26);
System.out.println("\nLocalDateTime :- " + localDateTime2);
// 2.1 format LocalDateTime2 in FormatStyle.MEDIUM
String formattedStr2 = localDateTime2.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM));
System.out.println("LocalDateTime in FormatStyle.MEDIUM :- " + formattedStr2);
// 3. form LocalDateTime passing Date(year/month/day) & Time(hour/minute/second/nano)
LocalDateTime localDateTime3 = LocalDateTime.of(2019, 9, 26, 11, 35, 26, 425);
System.out.println("\nLocalDateTime :- " + localDateTime3);
// 3.1 format localDateTime3 in FormatStyle.MEDIUM
String formattedStr3 = localDateTime3.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM));
System.out.println("LocalDateTime in FormatStyle.MEDIUM :- " + formattedStr3);
// 4. form LocalDateTime passing Date(year/Month/day) & Time(hour/minute)
LocalDateTime localDateTime4 = LocalDateTime.of(2019, Month.SEPTEMBER, 26, 11, 35);
System.out.println("\nLocalDateTime :- " + localDateTime4);
// 4.1 format LocalDateTime4 in FormatStyle.SHORT
String formattedStr4 = localDateTime4.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT));
System.out.println("LocalDateTime in FormatStyle.SHORT :- " + formattedStr4);
// 5. form LocalDateTime passing Date(year/Month/day) & Time(hour/minute/second)
LocalDateTime localDateTime5 = LocalDateTime.of(2019, Month.SEPTEMBER, 26, 11, 35, 26);
System.out.println("\nLocalDateTime :- " + localDateTime5);
// 5.1 format LocalDateTime5 in FormatStyle.MEDIUM
String formattedStr5 = localDateTime5.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM));
System.out.println("LocalDateTime in FormatStyle.MEDIUM :- " + formattedStr5);
// 6. form LocalDateTime passing Date(year/Month/day) & Time(hour/minute/second/nano)
LocalDateTime localDateTime6 = LocalDateTime.of(2019, Month.SEPTEMBER, 26, 11, 35, 26, 425);
System.out.println("\nLocalDateTime :- " + localDateTime6);
// 6.1 format LocalDateTime6 in FormatStyle.SHORT
String formattedStr6 = localDateTime6.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT));
System.out.println("LocalDateTime in FormatStyle.SHORT :- " + formattedStr6);
// 7. form LocalDateTime passing LocalDate(year/Month/day) & LocalTime(hour/minute/second/nano)
LocalDate localDate = LocalDate.now();
LocalTime localTime = LocalTime.now();
LocalDateTime localDateTime7 = LocalDateTime.of(localDate, localTime);
System.out.println("\nLocalDateTime :- " + localDateTime7);
// 7.1 format LocalDateTime7 in FormatStyle.MEDIUM
String formattedStr7 = localDateTime7.format(
DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM));
System.out.print("LocalDateTime in FormatStyle.MEDIUM :- " + formattedStr7);
}
}
Output:
LocalDateTime :- 2019-09-26T11:35
LocalDateTime in FormatStyle.SHORT :- 26/09/19, 11:35 am
LocalDateTime :- 2019-09-26T11:35:26
LocalDateTime in FormatStyle.MEDIUM :- 26-Sep-2019, 11:35:26 am
LocalDateTime :- 2019-09-26T11:35:26.000000425
LocalDateTime in FormatStyle.MEDIUM :- 26-Sep-2019, 11:35:26 am
LocalDateTime :- 2019-09-26T11:35
LocalDateTime in FormatStyle.SHORT :- 26/09/19, 11:35 am
LocalDateTime :- 2019-09-26T11:35:26
LocalDateTime in FormatStyle.MEDIUM :- 26-Sep-2019, 11:35:26 am
LocalDateTime :- 2019-09-26T11:35:26.000000425
LocalDateTime in FormatStyle.SHORT :- 26/09/19, 11:35 am
LocalDateTime :- 2022-08-08T17:22:15.816547500
LocalDateTime in FormatStyle.MEDIUM :- 08-Aug-2022, 5:22:15 pm
Related Articles:
- Java 8 – LocalDateTime with method details and examples
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- Java 8 – How to check whether a LocalDateTime is Before another LocalDateTime ?
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- Java 8 – How to compare two LocalDateTime instances ?
- Java 8 – How to find difference between two LocalDateTime using Period & Duration ?
- Java 8 – What are all the Temporal Fields supported by LocalDateTime ?
- Java 8 – What are all the Temporal Units supported by LocalDateTime ?
- More Java 8 Date/Time API examples
References:
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html
- https://docs.oracle.com/javase/8/docs/api/java/time/LocalTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/Month.html
- https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
- https://docs.oracle.com/javase/8/docs/api/java/time/format/FormatStyle.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 !!