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https://issues.apache.org/jira/browse/VALIDATOR-321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995633#comment-14995633
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Sebb commented on VALIDATOR-321:
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The "00" suffix ought to be variable, as that is decided by the publisher.
However it could default to "00".
> ISSN validator and converter to EAN-13
> --------------------------------------
>
> Key: VALIDATOR-321
> URL: https://issues.apache.org/jira/browse/VALIDATOR-321
> Project: Commons Validator
> Issue Type: Wish
> Components: Routines
> Reporter: Marco Janc
> Labels: validators
>
> Similar to the ISBNValidator an ISSNValidator would be a great feature.
> Conversion from ISSN to EAN by adding the prefix "977" and "00" right before
> the checkdigit to the issn code and recalculating the checksum similar to the
> ISBN conversion method.
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