Java.util.Arrays.hashCode(double[]) Method

Description

The java.util.Arrays.hashCode(double[]) method returns a hash code based on the contents of the specified array. For any two double arrays a and b such that Arrays.equals(a, b), it is also the case that Arrays.hashCode(a) == Arrays.hashCode(b).

Declaration

Following is the declaration for java.util.Arrays.hashCode() method

public static int hashCode(double[] a)

Parameters

a − This is the array whose hash value to compute.

Return Value

This method returns a content-based hash code for a.

Exception

NA

Example

The following example shows the usage of java.util.Arrays.hashCode() method.

package com.tutorialspoint;

import java.util.Arrays;

public class ArrayDemo {
   public static void main(String[] args) {

      // initializing double array
      double[] dval = new double[] { 2.9, 1.7 };

      // hashcode for value1
      int retval = dval.hashCode();

      // printing hash code value
      System.out.println("The hash code of value1 is: " + retval);
      
      // value2 for double array
      dval = new double[] { 1.2, 3.4 };

      // hashcode for value2
      retval = dval.hashCode();

      // printing hash code value
      System.out.println("The hash code of value2 is: " + retval);
   }
}

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

The hash code of value1 is: 4072869
The hash code of value2 is: 1671711