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Java LocalDateTime Class | hashCode() Method with Example

LocalDateTime Class hashCode() method: Here, we are going to learn about the hashCode() method of LocalDateTime Class with its syntax and example.
Submitted by Preeti Jain, on June 06, 2020

LocalDateTime Class hashCode() method

• hashCode() method is available in java.time package.
• hashCode() method is used to get the hash code value for this LocalDateTime.
• hashCode() 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.
• hashCode() method does not throw an exception at the time of returning hash code.

Syntax:

    public int hashCode();

Parameter(s):

• None

Return value:

The return type of this method is int, it retrieves this date-time hash code value.

Example:

// Java program to demonstrate the example 
// of int hashCode() method of LocalDateTime

import java.time.*;

public class HashCodeOfLocalDateTime {
    public static void main(String args[]) {
        // 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();

        // Here, this method returns the 
        // hash code value for this date-time
        // object da_ti1
        int hash_code = da_ti1.hashCode();

        // Display hash_code
        System.out.print("da_ti1.hashCode(): ");
        System.out.println(hash_code);

        // Here, this method returns the
        // hash code value for this date-time 
        // object da_ti2
        hash_code = da_ti2.hashCode();

        // Display hash_code
        System.out.print("da_ti2.hashCode(): ");
        System.out.println(hash_code);
    }
}

Output

LocalDateTime da_ti1 and da_ti2: 
da_ti1: 2005-10-05T10:10:10
da_ti2: 2020-06-06T20:54:03.548727

da_ti1.hashCode(): -298508338
da_ti2.hashCode(): 12661553