Java LocalDateTime

The Java LocalDateTime class is an immutable and thread-safe class that represents date and time with a default format of yyyy-MM-dd-HH-mm-ss.zzz. The LocalDateTime class can be used to store date and time in the following format “22nd April 2018 at 05:10.30.123456789”.

How to use

This class does not handle or represent time-zone, we can use LocalDateTime class to store information like birthdays with time. Try the below-shown examples, it will print the date and time according to your system default zone. The time might be different if you run the code in our online Java Editor as the code is running on somewhere in the cloud.

Parsing example

The following example program shows how you can parse date and time from a given string.

LocalDateTimeExample1.javaCopy
import java.time.LocalDateTime;

public class LocalDateTimeExample1 {

    public static void main(String[] args) {

        // Get current date and time
        LocalDateTime dateTime = LocalDateTime.now();
        System.out.println("Current date & time: " + dateTime);

        // Parsing given date and time
        dateTime = LocalDateTime.parse("2019-05-06T11:57:27.866003800");
        System.out.println("Parsed date & time: " + dateTime);
    }
}
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Format example

The following example program shows how you can format date & time.

LocalDateTimeExample2.javaCopy
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class LocalDateTimeExample2 {

    public static void main(String[] args) {

        // Get current date and time
        LocalDateTime dateTime = LocalDateTime.now();
        System.out.println("Default format: " + dateTime);

        // Format date & time
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MMM-yyyy HH:mm:ss");
        String formated = dateTime.format(formatter);
        System.out.println("Formatted date & time: " + formated);
    }
}
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Fields example

The following example program shows how you can get different fields of date & time.

LocalDateTimeExample3.javaCopy
import java.time.LocalDateTime;

public class LocalDateTimeExample3 {

    public static void main(String[] args) {

        // Get current date and time
        LocalDateTime dateTime = LocalDateTime.now();

        // Get different fields of date and time
        System.out.println("Year: " + dateTime.getYear());
        System.out.println("Month: " + dateTime.getMonth());
        System.out.println("Day: " + dateTime.getDayOfMonth());
        System.out.println("Hour: " + dateTime.getHour());
        System.out.println("Minute: " + dateTime.getMinute());
        System.out.println("Second: " + dateTime.getSecond());
    }
}
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