Java.lang.Integer.hashCode() Method

Description

The java.lang.Integer.hashCode() method returns a hash code for this Integer.

Declaration

Following is the declaration for java.lang.Integer.hashCode() method

public int hashCode()

Parameters

• NA

Return Value

This method returns a hash code value for this object, equal to the primitive int value represented by this Integer object.

Exception

• NA

Example

The following example shows the usage of java.lang.Integer.hashCode() method.

package com.tutorialspoint;

import java.lang.*;

public class IntegerDemo {

   public static void main(String[] args) {

     Integer i = new Integer("20");
    
     /* returns a hash code value for this object, equal to the primitive
     int value represented by this Integer object */
     int retval = i.hashCode();
     System.out.println("Value = " + retval);
   }
}

Let us compile and run the above program, this will produce the following result:

Value = 20