XML : How to specify null value for a string resource in xml in Android?

In my values.xml, I have some string resources. But sometimes, I want to have a null value for that string resource for specific reasons.

How do I specify that string to have a null value?

values.xml:

  <string name="default_item_0">Some String</string>  <string name="default_item_1">@null</string>    

Java code:

  String item0 = context.getString(R.string.default_item_0);  String item1 = context.getString(R.string.default_item_1);    

Expected:

  String item0 = "Some String";  String item1 = null;    

Actual:

  String item0 = "Some String";  String item1 = "@0";    

I tried the @null value, but it returns a string of @0 instead.

Is it possible to have a null value in xml?