GsonBuilder gb = new GsonBuilder();	gb.setDateFormat("yyyy-MM-dd HH:mm");	gb.registerTypeAdapter(Date.class, new JsonDeserializer
    
     () {		DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");		@Override		public Date deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) throws JsonParseException {			try {				return df.parse(json.getAsString());			} catch (ParseException e) {				return null;			}		}	});	gb.registerTypeAdapter(Long.class, new JsonDeserializer
     
      () {		@Override		public Long deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) throws JsonParseException {			if (json.isJsonNull() || json.getAsString().length() == 0) {				return null;			}			try {				return json.getAsLong();			} catch (NumberFormatException e) {				return null;			}		}	});	gb.registerTypeAdapter(Integer.class, new JsonDeserializer
      
       () {		@Override		public Integer deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context)				throws JsonParseException {			if (json.isJsonNull() || json.getAsString().length() == 0) {				return null;			}			try {				return json.getAsInt();			} catch (NumberFormatException e) {				return null;			}		}	});	gson = gb.create();}