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

Description

The java.util.Arrays.hashCode(int[]) method returns a hash code based on the contents of the specified array. For any two non-null int 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(int[] 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 int array
      int[] ival = new int[] { 3, 5 };

      // hashcode for value1
      int retval = ival.hashCode();
      
      // printing hash code value
      System.out.println("The hash code of value1 is: " + retval);

      // value2 for double array
      ival = new int[] { 19, 75 };

      // hashcode for value2
      retval = ival.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