LocalDateTime parse() method in Java with Examples

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:

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// 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);
    }
}

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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:

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code

// 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 formater
        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);
    }
}

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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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