org.apache.commons.validator
Class ISBNValidator

java.lang.Object
  |
  +--org.apache.commons.validator.ISBNValidator

public class ISBNValidator

extends java.lang.Object

A class for validating 10 digit ISBN codes. Based on this algorithm

Since:

Validator 1.2.0

Constructor Summary

ISBNValidator()
Default Constructor.

Method Summary

boolean

isValid(java.lang.String isbn) If the ISBN is formatted with space or dash separators its format is validated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ISBNValidator

public ISBNValidator()

Default Constructor.

Method Detail

isValid

public boolean isValid(java.lang.String isbn)

If the ISBN is formatted with space or dash separators its format is validated. Then the digits in the number are weighted, summed, and divided by 11 according to the ISBN algorithm. If the result is zero, the ISBN is valid. This method accepts formatted or raw ISBN codes.

Parameters:

isbn - Candidate ISBN number to be validated. null is considered invalid.

Returns:

true if the string is a valid ISBN code.