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IsoChronology localDateTime() method in Java with Example

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  • Last Updated : 27 Mar, 2020
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The localDateTime() method of java.time.chrono.IsoChronology class is used to retrieve the local date and time according to Iso calendar system from any other object of temporal accessor.

Syntax:

public LocalDateTime localDateTime(
         TemporalAccessor temporal)

Parameter: This method takes the object of any temporal accessor as a parameter.

Return Value: This method returns the local date and time according to Iso calendar system from any other object of the temporal accessor.

Below are the examples to illustrate the localDateTime() method:

Example 1:




// Java program to demonstrate
// localDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // LocalDate Object
            LocalDate hidate
                = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // creating and initializing
            // TemporalAccessor object
            ZonedDateTime zonedate
                = ZonedDateTime.parse(
                    "2018-10-25T23:12:31."
                    + "123+02:00[Europe/Paris]");
  
            // getting LocalDate for the
            // given TemporalAccessor object
            // by using localDateTime() method
            LocalDateTime date
                = crono.localDateTime(zonedate);
  
            // display the result
            System.out.println("LocalDateTime is: "
                               + date);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: " + e);
        }
    }
}

Output:

LocalDateTime is: 2018-10-25T23:12:31.123

Example 2:




// Java program to demonstrate
// localDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // LocalDate Object
            LocalDate hidate
                = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // creating and initializing
            // TemporalAccessor object
            LocalDateTime localdate
                = LocalDateTime
                      .parse("2018-12-30T19:34:50.63");
  
            // getting LocalDate for the
            // given TemporalAccessor object
            // by using localDateTime() method
            LocalDateTime date
                = crono.localDateTime(localdate);
  
            // display the result
            System.out.println("LocalDateTime is: "
                               + date);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: " + e);
        }
    }
}

Output:

LocalDateTime is: 2018-12-30T19:34:50.630

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#localDateTime-java.time.temporal.TemporalAccessor-


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