知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 This is excellent, is not it: You can start with The only implementation possible, so you are totally free to later migrate to a property Model without needing to alter the interface! So properties are not simply a substitute for getters and setters! Pick one Just about https://gurgaon-new-project.mystrikingly.com/