August 2021
Intermediate to advanced
450 pages
4h 46m
Chinese
Content preview from 面向对象的思考过程（原书第5版）Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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7.5 本章小结
本章对继承和组合做了基本的综述，并且阐述了它们的不同之处。很多受尊敬的面向对象设计大师指出应该尽量使用组合，只在必要的时候使用继承。
然而，这又过于简单化了。我认为如果组合能尽量隐藏真正的问题，组合比继承更适合，而不是尽可能使用组合。事实上在大多数情况下更适合使用组合并不意味着继承是邪恶的。同时使用组合和继承，但要在正确的上下文中。
在之前的章节中，抽象类以及Java接口的概念出现过多次。第8章中我们会探索开发契约的概念以及抽象类和Java接口如何满足契约。
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.