java.time.LocalDateTime.withDayOfMonth() Method Example

Description

The java.time.LocalDateTime.withDayOfMonth(int dayOfMonth) method returns a copy of this LocalDateTime with the day-of-month altered.

Declaration

Following is the declaration for java.time.LocalDateTime.withDayOfMonth(int dayOfMonth) method.

public LocalDateTime withDayOfMonth(int dayOfMonth)

Parameters

dayOfMonth − the day-of-month to set in the result, from 1 to 28-31.

Return Value

a LocalDateTime based on this date with the requested day, not null.

Exceptions

DateTimeException − if the day-of-month value is invalid, or if the day-of-month is invalid for the month-year.

Example

The following example shows the usage of java.time.LocalDateTime.withDayOfMonth(int dayOfMonth) method.

package com.tutorialspoint;

import java.time.LocalDateTime;

public class LocalDateTimeDemo {
   public static void main(String[] args) {
      
      LocalDateTime date = LocalDateTime.parse("2017-01-03T10:15:30");
      LocalDateTime result = date.withDayOfMonth(13);
      System.out.println(result);  
   }
}

Let us compile and run the above program, this will produce the following result −

2017-01-13T10:15:30