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Java - Long Class hashCode() Method

Long class hashCode() method: Here, we are going to learn about the hashCode() method of Long class with its syntax and example. By Preeti Jain Last updated : March 20, 2024

Long class hashCode() method

• hashCode() method is available in java.lang package.
• hashCode() method is used to return hashcode of the Long 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 hashcode for this object.

Example

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

public class HashCodeOfLongClass {
    public static void main(String[] args) {
        // Variables initialization
        long value1 = 30;
        long value2 = 10;

        // It returns hashcode value denoted by this Long ob1 object
        // by calling ob1.hashCode()
        Long ob1 = new Long(value1);

        // Display ob1 result
        System.out.println("ob1.hashCode(): " + ob1.hashCode());

        // It returns hashcode value denoted by this Long ob2 object
        // by calling ob2.hashCode()
        Long ob2 = new Long(value2);

        // Display ob2 result
        System.out.println("ob2.hashCode(): " + ob2.hashCode());
    }
}

Output

ob1.hashCode(): 30
ob2.hashCode(): 10