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LocalDateTime plusNanos() method in Java with Examples

  • Last Updated : 27 Nov, 2020

The plusNanos() method of LocalDateTime class is used to return a copy of this date-time with the specified nanoSeconds added.

Syntax:  

public LocalDateTime plusNanos(long nanoSeconds)

Parameter: It accepts a single parameter nanoSeconds which specifies the nanoSeconds to add which may be negative.

Return Value: This method returns a LocalDateTime based on this date-time with the nanoSeconds added.

Exceptions: The program throws a DateTimeException which is thrown if the result exceeds the supported nanoSeconds range. 



Below programs illustrate the LocalDateTime.plusNanos() method in Java:

Program 1:  

Java




// Program to illustrate the plusNanos() method
 
import java.util.*;
import java.time.*;
 
public class GfG {
    public static void main(String[] args)
    {
        LocalDateTime dt1
            = LocalDateTime
                  .parse("2018-01-11T10:15:30");
 
        System.out.println("LocalDateTime with 10000 nanoSeconds added: "
                           + dt1.plusNanos(10000));
    }
}
Output: 
LocalDateTime with 10000 nanoSeconds added: 2018-01-11T10:15:30.000010 
 

Program 2

Java




// Program to illustrate the plusNanos() method
 
import java.util.*;
import java.time.*;
 
public class GfG {
    public static void main(String[] args)
    {
        LocalDateTime dt1
            = LocalDateTime
                  .parse("2018-01-11T08:15:30");
 
        System.out.println("LocalDateTime with -1500 nanoSeconds added: "
                           + dt1.plusNanos(-1500));
    }
}
Output: 
LocalDateTime with -1500 nanoSeconds added: 2018-01-11T08:15:29.999998500 
 

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDateTime.html#plusNanos(long)
 

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