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From "Henri Yandell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LANG-494) CharSet sub-classes cannot be made thread-safe
Date Tue, 11 Aug 2009 06:46:14 GMT

    [ https://issues.apache.org/jira/browse/LANG-494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741723#action_12741723
] 

Henri Yandell commented on LANG-494:
------------------------------------

So, do we wrap it in a synchronized call?

> CharSet sub-classes cannot be made thread-safe
> ----------------------------------------------
>
>                 Key: LANG-494
>                 URL: https://issues.apache.org/jira/browse/LANG-494
>             Project: Commons Lang
>          Issue Type: Bug
>            Reporter: Sebb
>             Fix For: 3.0
>
>
> AFAICT, CharSet sub-classes cannot be made thread-safe.
> This is because the HashMap and HashSet collections are not thread-safe.
> If a sub-class updates COMMON, there is no guarantee that getInstance() will see the
update.
> In the case of the instance variable "set", the sub-class could override all the read/write
methods to provide thread-safety.

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