Double hashCode() method in Java with examples

BitSet hashCode Method in Java with Examples

Last Updated : 27 Dec, 2018

The hashCode() Method of BitSet class in Java is used to fetch the hash code value of a particular this BitSet. This returned hash codes value depends on the set bits of the bit set being passed. Syntax:

BitSet.hashCode()

Parameters: The method does not accept any parameters. Return Value: The method returns the hashcode value of the BitSet. Below programs are used to illustrate the working of BitSet.hashCode() Method: Program 1:

Java

// Java code to illustrate HashCode()
import java.util.*;

public class BitSet_Demo {
    public static void main(String args[])
    {
        // Creating an empty BitSet
        BitSet init_bitset = new BitSet();

        // Use set() method to add elements into the Set
        init_bitset.set(10);
        init_bitset.set(20);
        init_bitset.set(30);
        init_bitset.set(40);
        init_bitset.set(50);

        // Displaying the BitSet
        System.out.println("BitSet: " + init_bitset);

        // Displaying the hashcode
        System.out.println("The HashCode: "
                           + init_bitset.hashCode());
    }
}

Output:

BitSet: {10, 20, 30, 40, 50}
The HashCode: 1075053010

Program 2:

Java

// Java code to illustrate HashCode()
import java.util.*;

public class BitSet_Demo {
    public static void main(String args[])
    {
        // Creating an empty BitSet
        BitSet init_bitset = new BitSet();

        // Use set() method to add elements into the Set
        init_bitset.set(40);
        init_bitset.set(25);
        init_bitset.set(31);
        init_bitset.set(48);
        init_bitset.set(53);

        // Displaying the BitSet
        System.out.println("BitSet: " + init_bitset);

        // Displaying the hashcode
        System.out.println("The HashCode: "
                           + init_bitset.hashCode());
    }
}

Output:

BitSet: {25, 31, 40, 48, 53}
The HashCode: -2111765038

Double hashCode() method in Java with examples

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