On Apr 15, 10:15 am, Nirmal Kumar <nirmal.h...@gmail.com> wrote:
> Hi All,
>
> Can you give me some practical scenarios where we can use null key in a *
> HashMap*.
There are here:
http://www.coderanch.com/t/385836/Java-General/java/Why-HashMap-allows-add-one

some examples of use of null key in hashmap.

Michèle
>
> Thanks,
> Nirmal
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