Home » Java » Java Reference » Java LocalDateTime Class

Java LocalDateTime Class | minusDays() Method with Example

LocalDateTime Class minusDays() method: Here, we are going to learn about the minusDays() method of LocalDateTime Class with its syntax and example.
Submitted by Preeti Jain, on June 07, 2020

LocalDateTime Class minusDays() method

• minusDays() method is available in java.time package.
• minusDays() method is used to subtract the given days from this date-time and return the LocalDateTime.
• minusDays() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• minusDays() method may throw an exception at the time of performing subtraction.
  DateTimeException – This exception may throw when the calculated result value exceeds the limit.

Syntax:

    public LocalDateTime minusDays(long day_val);

Parameter(s):

• long day_val – represents the days to be subtracted from this LocalDateTime.

Return value:

The return type of this method is LocalDateTime, it returns the LocalDateTime that holds the value subtracted the given days from this date-time.

Example:

// Java program to demonstrate the example 
// of minusDays(long day_val) method 
// of LocalDateTime

import java.time.*;

public class MinusDaysOfLocalDateTime {
    public static void main(String args[]) {
        long days = 6;
        // Instantiates two LocalDateTime
        LocalDateTime da_ti1 = LocalDateTime.parse("2005-10-05T10:10:10.00");
        LocalDateTime da_ti2 = LocalDateTime.now();

        // Display da_ti1, da_ti2
        System.out.println("LocalDateTime da_ti1 and da_ti2: ");
        System.out.println("da_ti1: " + da_ti1);
        System.out.println("da_ti2: " + da_ti2);
        System.out.println("days to subtract: " + days);

        System.out.println();

        // Here, this method subtracts the given
        // days from this date-time object 
        // i.e. here we are subracting 6 days 
        // from this object da_ti1
        LocalDateTime minus_days = da_ti1.minusDays(days);

        // Display minus_days
        System.out.print("da_ti1.minusDays(days): ");
        System.out.println(minus_days);

        // Here, this method subtracts the given days
        // from this date-time object i.e. here we are
        // subracting 6 days from this object da_ti2
        minus_days = da_ti2.minusDays(days);

        // Display minus_days
        System.out.print("da_ti2.minusDays(days): ");
        System.out.println(minus_days);
    }
}

Output

LocalDateTime da_ti1 and da_ti2: 
da_ti1: 2005-10-05T10:10:10
da_ti2: 2020-06-07T15:34:09.488007
days to subtract: 6

da_ti1.minusDays(days): 2005-09-29T10:10:10
da_ti2.minusDays(days): 2020-06-01T15:34:09.488007