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Showing content from https://www.geeksforgeeks.org/java/sortedset-hashcode-method-in-java-with-examples/ below:

SortedSet hashCode() method in Java with Examples

Last Updated : 12 Jul, 2025

The

hashCode()

method of

SortedSet

in Java is used to get the hashCode value for this instance of the SortedSet. It returns an integer value which is the hashCode value for this instance of the SortedSet.

Syntax:

public int hashCode()

Parameters:

This function has no parameters.

Returns:

The method returns an

integer value

which is the hashCode value for this instance of the Set.

Note

: The hashCode() method in

SortedSet

is inherited from the

Set interface

in Java. Below examples illustrates the SortedSet.hashCode() method:

Example 1: Java


 // Java code to demonstrate the working of
// hashCode() method in SortedSet

import java.util.*;

public class GFG {
    public static void main(String[] args)
    {
        // creating an Set
        SortedSet<Integer> arr
            = new TreeSet<Integer>();

        // using add() to initialize values
        // [1, 2, 3, 4]
        arr.add(1);
        arr.add(2);
        arr.add(3);
        arr.add(4);

        // print Set
        System.out.println("Set: " + arr);

        // Get the hashCode value
        // using hashCode() value
        System.out.println("HashCode value: "
                           + arr.hashCode());
    }
}

Output:

Set: [1, 2, 3, 4]
HashCode value: 10

Example 2: Java


 // Java code to demonstrate the working of
// hashCode() method in Set

import java.util.*;

public class GFG {
    public static void main(String[] args)
    {
        // creating an Set
        SortedSet<String> arr
            = new TreeSet<String>();

        // using add() to initialize values
        // [Geeks, For, ForGeeks, GeeksForGeeks]
        arr.add("Geeks");
        arr.add("For");
        arr.add("ForGeeks");
        arr.add("GeeksForGeeks");

        // print Set
        System.out.println("Set: " + arr);

        // Get the hashCode value
        // using hashCode() value
        System.out.println("HashCode value: "
                           + arr.hashCode());
    }
}

Output:

Set: [For, ForGeeks, Geeks, GeeksForGeeks]
HashCode value: -482506029

Reference

https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#hashCode()

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