ChronoLocalDateTime plus(TemporalAmount) method in Java with Examples

The plus() method of a ChronoLocalDateTime interface is used to return a copy of this ChronoLocalDateTime with the specified amount added to date-time. The amount is typically Period or Duration but may be any other type implementing the TemporalAmount interface.

Syntax:

default ChronoLocalDateTime plus(TemporalAmount amountToadd)

Parameters: This method accepts one single parameter amountToadd which is the amount to add, It should not be null.



Return value: This method returns ChronoLocalDateTime based on this date-time with the addition made, not null.

Exception:
This method throws following Exceptions:

  • DateTimeException – if the addion cannot be made
  • ArithmeticException – if numeric overflow occurs

Below programs illustrate the plus() method:
Program 1:

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// Java program to demonstrate
// ChronoLocalDateTime.plus() method
  
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Get the ChronoLocalDateTime instance
        ChronoLocalDateTime ldt
            = LocalDateTime
                  .parse("2019-12-31T19:15:30");
  
        // Get the String representation of this ChronoLocalDateTime
        System.out.println("Original ChronoLocalDateTime: "
                           + ldt.toString());
  
        // add 10 Days to ChronoLocalDateTime
        ChronoLocalDateTime value
            = ldt.plus(Period.ofDays(10));
  
        // print result
        System.out.println("ChronoLocalDateTime after adding Days: "
                           + value);
    }
}

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Output:

Original ChronoLocalDateTime: 2019-12-31T19:15:30
ChronoLocalDateTime after adding Days: 2020-01-10T19:15:30

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoLocalDateTime.html#plus-java.time.temporal.TemporalAmount-



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