C ++促进类定义和类实现之间的分离，而不是JAVA [英] C++ promotes a separation between class definitions and class implementations but not JAVA
问题描述
我有一个作业，我需要评估哪种方法更好根据GRASP。
I have a homework and I need to evaluate which approach is better according to GRASP.
我发现这个链接，回答了我的问题的一部分：在C ++中为什么有头文件和cpp文件？
I found this link that answers part of my questioning: In C++ why have header files and cpp files?
然而，我想知道的是多少c ++工作方式更好的可扩展性和代码重用比JAVA，因为一切都在一个联合文件中定义？
However, what I want to know is how much c++ way of working is better for extensibility and for code reuse than JAVA because everything is defined in a conjoint file ?
感谢您的帮助！
编辑：为了确保这不是一个辩论，我想知道为什么JAVA不喜欢在C和促进类定义和类实现之间的分离。
Just to make sure that this is not a debate, I want to know why does JAVA does not do like in C and promotes the separation between class definitions and class implementations. Are there any advantages with that way of working or proceding ?
推荐答案
在Java中的等价是你声明 class接口，用于实现无声明的目的。实现与接口的绑定确实在运行时发生
the equivalent in java is that you declare class interfaces that does serve the purpose of a implementation-less declaration. The binding of the implementation to the interface does happen at runtime
在可扩展性的意义上，两者都是完全等效的。两种语言之间的差异不在于可扩展性能力本身，而在于它们的性能方法。 Java和C＃在它们的语法更统一，更简洁，而某些C ++可能是一个痛苦为初学者阅读。 C ++通过模板在编译时类型绑定方面有广泛的关注，而Java和C＃传统上更关注运行时绑定和反射。虽然对于某些应用程序领域（主要是高性能计算）来说，垃圾收集等好的语言特性对于Java和C＃仍然是一个高级的入口门槛，但这种差异在过去几年已经软化了。
in the sense of extensibility both are entirely equivalent. The differences between both languages do not lie in the extensibility capabilities themselves, but in their performance approaches. Java and C# are more uniform in their syntax and more terse, while certain C++ can be a pain to read for the beginner. C++ has extensive focus in compile-time type binding through templates, while java and C# have traditionally more focus on run-time binding and reflection. This difference has softened in the last years, although for some application domain niches (mainly high performance computing) nice language features like garbage collection are still a high barrier of entry for the likes of Java and C#
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