Gson ignores null when deserializing an object

Question

I want to deserialize a json string containing a null value in Java. I want to deserialize an object to a Properties object. The json line looks something like this:

 {"prop1":null, "propr2":"fancy value"} 

When I deserialize with

 String json = // new Gson().fromJson(json, Properties.class); 

I get a null pointer exception due to the Hastable that is in the Properties object. How can I instruct Gson to ignore null deserialization?

Answer 1

See http://sites.google.com/site/gson/gson-user-guide#TOC-Null-Object-Support :

Gson gson = new GsonBuilder().serializeNulls().create();