抽象加上方法名定义了词汇表。

The abstractions plus the method names define the vocabulary.

youdao

只要方法名匹配，就可以利用多态性。

So long as method names match, you have polymorphism.

youdao

这样可以防止误拼方法名之类的常见错误。

This would prevent a common mistake like misspelling the method name.

youdao

I'd really like to have that modularity that says, I'm only going to get access to the values, not by calling their names, but by calling some specific method to get access to their names.

这样我们就丢掉了代码的模块化,我很希望代码有这样的模块化：,我访问变量的值，不是通过直接调用它们的名字，而是通过调用某个可以,访问这些变量名的方法来访问。

麻省理工公开课 - 计算机科学及编程导论课程节选