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Java Date Time - LocalDateTime.withDayOfMonth() Examples

[Last Updated: Nov 8, 2025]

Java Date Time Java Java API

Class:

java.time.LocalDateTime

Method:


public LocalDateTime withDayOfMonth(int dayOfMonth)

Returns a copy of this LocalDateTime with the day-of-month replaced with the specified

dayOfMonth value. This method will throw exception for a value like 32, because 32 is not a valid day of any month.

Examples

package com.logicbig.example.localdatetime;

import java.time.LocalDateTime;

public class WithDayOfMonthExample {

    public static void main (String... args) {
        LocalDateTime dt = LocalDateTime.of(2000, 5, 3,
                                            20, 10);
        LocalDateTime dt2 = dt.withDayOfMonth(31);
        System.out.println(dt2);
    }
}

Output

2000-05-31T20:10

See Also