https://blog.youkuaiyun.com/xjd444zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/xjd444/article/details/151764460https://blog.youkuaiyun.com/xjd444/article/details/151764460xjd444Tue, 16 Sep 2025 21:07:32 +0800https://blog.youkuaiyun.com/xjd444/article/details/150398250https://blog.youkuaiyun.com/xjd444/article/details/150398250xjd444Thu, 14 Aug 2025 19:17:36 +0800https://blog.youkuaiyun.com/xjd444/article/details/149647935https://blog.youkuaiyun.com/xjd444/article/details/149647935xjd444Fri, 25 Jul 2025 20:25:32 +0800https://blog.youkuaiyun.com/xjd444/article/details/149583613https://blog.youkuaiyun.com/xjd444/article/details/149583613xjd444Wed, 23 Jul 2025 22:42:25 +0800https://blog.youkuaiyun.com/xjd444/article/details/148099753https://blog.youkuaiyun.com/xjd444/article/details/148099753xjd444Tue, 20 May 2025 22:06:04 +0800的子类型——这样就创建了一个递归类型约束。抽象基类—不可变对象设计思想：final Set字段，构造器的防御性克隆，不提供setter方法。上述提到的NyPizza和Calzone只取NyPizza来分析。]]>