Java - String hashCode() Method

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Description:

This method returns a hash code for this string. The hash code for a String object is computed as:

s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]

Using int arithmetic, where s[i] is the ith character of the string, n is the length of the string, and ^ indicates exponentiation. (The hash value of the empty string is zero.)

Syntax:

Here is the syntax of this method:

public int hashCode()

Parameters:

Here is the detail of parameters:

  • NA

Return Value:

  • This method returns a hash code value for this object.

Example:

import java.io.*;

public class Test{
   public static void main(String args[]){
      String Str = new String("Welcome to Tutorialspoint.com");
      System.out.println("Hashcode for Str :" + Str.hashCode() );
   }
}

This produces the following result:

Hashcode for Str :1186874997



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