Java - Boolean Class hashCode() Method

Boolean class hashCode() method: Here, we are going to learn about the hashCode() method of Boolean class with its syntax and example. By Preeti Jain Last updated : March 17, 2024

Boolean class hashCode() method

hashCode() method is available in java.lang package.
hashCode() method is used to return hashcode of the Boolean object.
hashCode() method is a non-static method, it is accessible with the class object only and if we try to access the method with the 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();

Parameters

It does not accept any parameter.

Return Value

The return type of this method is int - it returns hash code for this Boolean object.

Note:

If the given Boolean object value is true then the hashcode of this value 1231.
If the given Boolean object value is false then the hashcode of this value 1237.

Example

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

public class HashCodeOfBooleanClass {
    public static void main(String[] args) {
        // Variables initialization
        boolean value1 = true;
        boolean value2 = false;

        // It returns hashcode value denoted by this Boolean b1 object
        // by calling b1.hashCode()
        Boolean b1 = new Boolean(value1);

        // Display b1 result
        System.out.println("b1.hashCode(): " + b1.hashCode());

        // It returns hashcode value denoted by this Boolean b2 object
        // by calling b2.hashCode()
        Boolean b2 = new Boolean(value2);

        // Display b2 result
        System.out.println("b2.hashCode(): " + b2.hashCode());
    }
}

Output

b1.hashCode(): 1231
b2.hashCode(): 1237

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