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 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 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
