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Java Duration Class | hashCode() Method with Example

Duration Class hashCode() method: Here, we are going to learn about the hashCode() method of Duration Class with its syntax and example.
Submitted by Preeti Jain, on May 16, 2020

Duration Class hashCode() method

• hashCode() method is available in java.time package.
• hashCode() method is used to get the hash code value for this Duration.
• hashCode() method is a non-static method, it is accessible with class object only and if we try to access the method with 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 Duration hash code value.

Example:

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

import java.time.*;

public class HashCodeOfDuration {
    public static void main(String args[]) {
        // Instantiates two Duration  objects
        Duration du1 = Duration.ofHours(1);
        Duration du2 = Duration.parse("P1DT24H60M60S");

        // Display du1 and du2
        System.out.println("du1: " + du1);
        System.out.println("du2: " + du2);

        // returns the hash code
        // value for this Duration du1
        int hash_code = du1.hashCode();

        // Display hash_code
        System.out.println("du1.hashCode(): " + hash_code);

        // returns the hash code
        // value for this Duration du2
        hash_code = du2.hashCode();

        // Display hash_code
        System.out.println("du2.hashCode(): " + hash_code);
    }
}

Output

du1: PT1H
du2: PT49H1M
du1.hashCode(): 3600
du2.hashCode(): 176460