public static <T extends Factory> T objectFromJson(JsonObject json, T prototype) throws ParseException { T object = (T) prototype.create(); Method[] methods = object.getClass().getMethods(); for (final Method method : methods) { if (method.getName().startsWith("set") && method.getParameterTypes().length == 1) { final String name = Introspector.decapitalize(method.getName().substring(3)); Class<?> parameterType = method.getParameterTypes()[0]; if (json.containsKey(name)) try { if (parameterType.equals(boolean.class)) { method.invoke(object, json.getBoolean(name)); } else if (parameterType.equals(int.class)) { method.invoke(object, json.getJsonNumber(name).intValue()); } else if (parameterType.equals(long.class)) { if (json.get(name).getValueType() == JsonValue.ValueType.NUMBER) { method.invoke(object, json.getJsonNumber(name).longValue()); } } else if (parameterType.equals(double.class)) { method.invoke(object, json.getJsonNumber(name).doubleValue()); } else if (parameterType.equals(String.class)) { method.invoke(object, json.getString(name)); } else if (parameterType.equals(Date.class)) { method.invoke(object, dateFormat.parse(json.getString(name))); } else if (parameterType.equals(Map.class)) { method.invoke(object, MiscFormatter.fromJson(json.getJsonObject(name))); } } catch (IllegalAccessException | InvocationTargetException error) { } } } return object; }