java tutorial - Java Strings hashCode() method - java programming - learn java - java basics - java for beginners
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Description
Java Strings hashCode() method - it returns a hash code for the given string. How the hash code is calculated for the object of String:
s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]click below button to copy the code. By - java tutorial - team
- The use of integer arithmetic, where s [i] is the i-th character of the string, n is the length of the string, and ^ indicates exponentiation. (The hash value of empty string is zero).
Syntax
Syntax of this method:
public int hashCode()click below button to copy the code. By - java tutorial - team
Options
Detailed information about the parameters:
- This is the default method, and it will not accept any parameters.
Return value
- In Java, hashCode () returns the hash value for this object.
Sample Code
import java.io.*;
public class Test {
public static void main(String args[]) {
String Str = new String("Welcome to wikitechy.com");
System.out.println("Hashcode for Str :" + Str.hashCode() );
}
}click below button to copy the code. By - java tutorial - team
Output
Hashcode for Str :1639280703