True, but if he does not cast his reference to the underlying implementation,
the jvm has no way to know that the underlying implementation is serializable
does it, hence the error. All the calling method knows is that you passed a Set
and Set does not extend Serializable.
----------------------------------------
> Date: Sat, 18 Jul 2009 18:11:17 +0530
> Subject: Re: HashMap.Entry not serializable?
> From: vineetsemwal1...@gmail.com
> To: users@wicket.apache.org
>
> Russell,
> Set,List,Map do not implement Serializable but their implementations do.
> In the case of Entry ,it's implemented in Map implementations like hashmap .
> the class which implements Entry there isn't Serializable.
>
>
> regards,
> Vineet Semwal
>
>
>
>
> On Sat, Jul 18, 2009 at 5:22 PM, Russell Simpkins <
> russellsimpk...@hotmail.com> wrote:
>
>>
>> hashMap.entrySet returns a Set If you look at the javadocs, Set
>> does not extend Serializable:
>> public interface Setextends Collection
>> All Superinterfaces:Collection, Iterable
>>
>>
>> ----------------------------------------
>>> Date: Sat, 18 Jul 2009 13:06:32 +0300
>>> Subject: HashMap.Entry not serializable?
>>> From: martin.maku...@koodaripalvelut.com
>>> To: users@wicket.apache.org
>>>
>>> Hi!
>>>
>>> I am a bit onfused.. I have new ListView("id", new
>>> LinkedList(hashMap.entrySet())) and Wicket gives:
>>>
>>>
>> org.apache.wicket.util.io.SerializableChecker$WicketNotSerializableException:
>>> Unable to serialize class: java.util.HashMap$Entry
>>>
>>> This does not make sense, I would expect hashmap entries to be fully
>>> serializable .. not? Any quick workarounds?
>>>
>>> **
>>> Martin
>>>
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>>
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