xml parsing in android - recursive tags

I have little confusion regarding the xml parsing in android, Lemme explain the scenario. Lets say I have a tag namely

<item>  </item>

, this tag can hold another tag with the same description into it

<item>

<item>  </item>

</item>

after inserting the data appropriately how could i possibly able to know if there is a child item in an item or not, and if yes then how could i parse it.

MGD