public class MyObjectChild extends MyObject {

 int id;
 string name;
 static List <MyObject> staticList = new ArrayList<>();
 static String jsonStaticList = null;



   @Override
   public void addToList ()  {

     List<MyObject> list = new ArrayList<>();

     try {
         list.add(this);
         }  catch (Exception e){
            Log.e("error", "Didn’t add MyObject to the methodList ");  }

     try {
         staticList.add(this);
         }  catch (Exception e){
        Log.e("error", "Didn’t add MyObject to the staticList");    }
   }

}