When I use a code like:

public class GsonTester
{
...
  class BagOfPrimitives {
    private int value1 = 1;
    private String value2 = "abc";
    private transient int value3 = 3;
  }
...
  public String getAObject()
  {
    BagOfPrimitives obj = new BagOfPrimitives();
    Gson gson = new Gson();
    String json = gson.toJson(obj); 
    BagOfPrimitives obj2 = gson.fromJson(json, BagOfPrimitives.class);  
    return json;
  }
...
}

I can not use the standard "fromJson" method. Because the no-arg
constructor is not recognized.