How do I write a custom JSON deserializer for Gson?

Question

I have a Java class, User:

public class User
{
    int id;
    String name;
    Timestamp updateDate;
}

And I receive a JSON list containin

Answer 1

@Override
public User deserialize(JsonElement json, Type type,
        JsonDeserializationContext context) throws JsonParseException {

    JsonObject jobject = json.getAsJsonObject();

    return new User(
            jobject.get("id").getAsInt(), 
            jobject.get("name").getAsString(), 
            new Timestamp(jobject.get("update_date").getAsLong()));
}

I'm assuming User class has the appropriate constructor.