[doc]Small modification on the WeakHashMap doc

[Charles Lee]

Thanks David. Do I need another review?

On 06/03/2012 06:15 AM, David Holmes wrote:
> Hi Charles,
>
> I have no problem with this clarification in the implementation notes 
> being added. I've checked with Joe and it does not require CCC approval.
>
> David
> -----
>
> On 28/05/2012 5:36 PM, Charles Lee wrote:
>>
>> Hi devs,
>>
>> I'd like to propose a new minor change for the WeakHashMap doc, which I
>> got it from David :-)
>>
>> Would anyone got some time to take a look this fix[1]?
>>
>> 1. http://cr.openjdk.java.net/~littlee/7166055/webrev.01/
>> <http://cr.openjdk.java.net/%7Elittlee/7166055/webrev.01/>
>>
>> On 05/07/2012 11:45 AM, David Holmes wrote:
>>> Hi Charles,
>>>
>>> On 7/05/2012 1:05 PM, Charles Lee wrote:
>>>> Does anyone interested in this issue?
>>>
>>> Interest and time are two different things :)
>>>
>>> A shorter form would be:
>>>
>>> "If the values in the map do not rely on the map holding strong
>>> references to them, then one way to deal with this is ...
>>>
>>> David
>>>
>>>> On 05/03/2012 02:52 PM, Charles Lee wrote:
>>>>> Hi guys,
>>>>>
>>>>> In the Implementation notes of WeakHashMap[1], says:
>>>>>
>>>>> /One way to deal with this is to wrap values themselves within
>>>>> WeakReferences before inserting, as in: m.put(key, new
>>>>> WeakReference(value)), and then unwrapping upon each get./
>>>>>
>>>>> However, it is not concise and a little misleading. Because the value
>>>>> in the WeakReference can be GC'd if there are no strong reference to
>>>>> it. This behaviour surprises some customers.
>>>>> How about add a statement like [2]:
>>>>>
>>>>> /However, as the use of WeakReference in this manner will not prevent
>>>>> value objects from being GC'd, this approach is only useful when
>>>>> entries in the map are not relied upon for keeping the underlying
>>>>> value objects "live"./
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> [1]:
>>>>> http://docs.oracle.com/javase/7/docs/api/java/util/WeakHashMap.html
>>>>> [2]: http://cr.openjdk.java.net/~littlee/7166055/webrev.00/
>>>>> <http://cr.openjdk.java.net/%7Elittlee/7166055/webrev.00/>
>>>>>
>>>>
>>>>
>>>
>>
>>
>> -- 
>> Yours Charles
>>
>


-- 
Yours Charles