Setting Default value to a variable when deserializing using gson

Question

I am trying to convert JSON to Java object. When a certain value of a pair is null, it should be set with some default value.

Here is my POJO:

Answer 1

I think that the way to do this is to either write your no-args constructor to fill in default values, or use a custom instance creator. The deserializer should then replace the default values for all attributes in the JSON object being deserialized.