Interfaces(Thinking in Java)

最新推荐文章于 2024-07-19 22:55:25 发布

转载最新推荐文章于 2024-07-19 22:55:25 发布 · 145 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/zhtf2014/archive/2010/01/25/1656302.html

文章标签：

#java

本文深入探讨了面向对象编程中抽象类与接口的概念，解释了它们如何提供未实现的方法定义，以及接口如何允许多继承变体，实现一个类可以向上转型为多个基类型。

　　The interface keyword takes the concept of abstractness one step further. The abstract keyword allows you to create one or more undefined methods in a class—you provide part of the interface without providing a corresponding implementation. The implementation is provided by inheritors. The interface keyword produces a completely abstract class, one that provides no implementation at all. It allows the creator to determine method names, argument lists, and return types, but no method bodies. An interface provides only a form, but no implementation.

　　However, an interface is more than just an abstract class taken to the extreme, since it allows you to perform a variation of "multiple inheritance" by creating a class that can be upcast to more than one base type.

转载于:https://www.cnblogs.com/zhtf2014/archive/2010/01/25/1656302.html