LocalDateTime parse() method in Java with Examples

Last Updated : 27 Dec, 2022

In LocalDateTime class, there are two types of parse() method depending upon the parameters passed to it.

parse(CharSequence text)

parse() method of a LocalDateTime class used to get an instance of LocalDateTime from a string such as '2018-10-23T17:19:33' passed as parameter.The string must have a valid date-time and is parsed using DateTimeFormatter.ISO_LOCAL_DATE_TIME. Syntax:

public static LocalDateTime parse(CharSequence text)

Parameters: This method accepts only one parameter text which is the text to parse in LocalDateTime. It should not be null. Return value: This method returns LocalDateTime which is the parsed local date-time. Exception: This method throws DateTimeParseException if the text cannot be parsed. Below programs illustrate the parse() method: Program 1: 

Java 
// Java program to demonstrate
// LocalDateTime.parse() method

import java.time.*;

public class GFG {
    public static void main(String[] args)
    {

        // create an LocalDateTime object
        LocalDateTime lt
            = LocalDateTime
                  .parse("2018-12-30T19:34:50.63");

        // print result
        System.out.println("LocalDateTime : "
                           + lt);
    }
}
Output:
LocalDateTime : 2018-12-30T19:34:50.630

parse(CharSequence text, DateTimeFormatter formatter)

parse() method of a LocalDateTime class used to get an instance of LocalDateTime from a string such as '2018-10-23T17:19:33' passed as parameter using a specific formatter.The date-time is parsed using a specific formatter. Syntax:

public static LocalDateTime parse(CharSequence text, 
                                  DateTimeFormatter formatter)

Parameters: This method accepts two parameters text which is the text to parse and formatter which is the formatter to use. Return value: This method returns LocalDateTime which is the parsed local date-time. Exception: This method throws DateTimeParseException if the text cannot be parsed. Below programs illustrate the parse() method: Program 1: 

Java 
// Java program to demonstrate
// LocalDateTime.parse() method

import java.time.*;
import java.time.format.*;

public class GFG {
    public static void main(String[] args)
    {

        // create a formatter
        DateTimeFormatter formatter
            = DateTimeFormatter.ISO_LOCAL_DATE_TIME;

        // create an LocalDateTime object and
        LocalDateTime lt
            = LocalDateTime
                  .parse("2018-12-30T19:34:50.63",
                         formatter);

        // print result
        System.out.println("LocalDateTime : "
                           + lt);
    }
}
Output:
LocalDateTime : 2018-12-30T19:34:50.630

References: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDateTime.html#parse(java.lang.CharSequence) https://docs.oracle.com/javase/10/docs/api/java/time/LocalDateTime.html#parse(java.lang.CharSequence, java.time.format.DateTimeFormatter)

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