摘要:
创建胖子和瘦子实例 1.创建人的抽象类 public abstract class PersonBuilder { public abstract void BuildHead(); public abstract void BuildBody(); public abstract void Bui 阅读全文
摘要:
实例:生产罐头工厂 1.罐头实例类 public class ThinCan { public string name { get; set; } public DateTime factorydate { get; set; } public virtual void Show() { Conso 阅读全文