为什么java“最高"?称为“对象"的超类? [英] Why is java "highest" superclass called "Object"?

问题描述

我有一个奇怪的(也许是愚蠢的)问题:我想知道....为什么 javaObject"类称为Object"，而不是Class"?

I have a strange (and maybe silly) question: I was wondering.... why is java "Object" class called "Object", not "Class"?

例如，对于具有以下层次结构的 ArrayList

For example, for ArrayList whe have the following hierarchy

Object ->
Collection ->
List ->
ArrayList 

好的:ArrayList 是一个列表......列表是一个集合......但是一个集合(所有集合的类)不是一个对象......它是一个类！

Ok: ArrayList is a List... List is a Collection... but a Collection (the class of all collections) is not an Object... it is a class!

推荐答案

想想对象本身是什么.ArrayList 是一个列表，是吗?也是一个对象.它不是一类对象.类名描述了该类的实例代表什么.

Think about what the object itself is. An ArrayList is a list, yes? It's also an object. It's not a class of object. The class name describes what instances of that class represent.

一个集合不是一个集合类——它是一个一个集合(而且它是一个对象).

A collection isn't a class of collections - it's a collection (and it's an object).

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