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 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

Double hashCode() method in Java with examples

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