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Apache Commons Validator provides the building blocks for both client side validation and server side data validation.
It may be used standalone or with a framework like Struts.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.validator;
/**
* A class for validating 10 digit ISBN codes.
* Based on this
*
* algorithm
*
* NOTE: This has been replaced by the new
* {@link org.apache.commons.validator.routines.ISBNValidator}.
*
* @version $Revision: 1649191 $
* @since Validator 1.2.0
* @deprecated Use the new ISBNValidator in the routines package
*/
public class ISBNValidator {
/**
* Default Constructor.
*/
public ISBNValidator() {
super();
}
/**
* 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.
*
* @param isbn Candidate ISBN number to be validated. null
is
* considered invalid.
* @return true if the string is a valid ISBN code.
*/
public boolean isValid(String isbn) {
return org.apache.commons.validator.routines.ISBNValidator.getInstance().isValidISBN10(isbn);
}
}