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https://issues.apache.org/jira/browse/DIRMINA-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006436#comment-13006436
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Emmanuel Lecharny commented on DIRMINA-822:
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Any patch will be very welcomed. We can even build a version you can test if 
you like.

> Deserialising classes that do not implement Serializable fails
> --------------------------------------------------------------
>
>                 Key: DIRMINA-822
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-822
>             Project: MINA
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0.2
>            Reporter: Ulrich Kreher
>
> AbstractIoBuffer uses ObjectStreamClass.lookup(Class) which returns null for 
> classes that do not implement Serializable. This in turn leads to a 
> NullPointerException a few lines below in resolveClass(ObjectStreamClass) 
> where the ObjectStreamClass-parameter is null.
> Deserialising a non-serialisable class is completely legal, instances of such 
> a class will already fail to serialise so they will never get to 
> deserialisation.
> Using ObjectStreamClass.lookupAny(Class) will solve this issue, but it is not 
> available before Java 6.

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