Java.lang.Integer.hashCode() Method

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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