java和超类中的继承(Object, Class) [英] Inheritance in java and Superclasses(Object, Class)

问题描述

java.lang.Object 是否隐式继承了所有自定义类/对象的超类?我以为java不支持多重继承.我问的原因是我是否已经从我的自定义类中的另一个类继承，并且再次 java 强制隐式继承 java.lang.Object 在它之上，它不是多重继承吗?

Is java.lang.Object superclass of all the custom class/objects inherited implicitly? I thought java didn't support multiple inheritance. The reason I ask is if I already inherit from another class in my custom class and again java is forcing implicit inheritance of java.lang.Object on top of it, is it not multiple inheritance?

此外，java.lang.class Class 是否也是所有自定义类/对象的超类?如果没有，我们如何在 Java 反射中获取传递的任何类的类类型或在任何对象上调用 isInstance?

Also, is java.lang.class Class also the superclass for all custom classes/Objects? If not, how in java reflections we can get the type of class for any class passed or call isInstance on any object?

推荐答案

Everything is an Object，也就是说你可以看到这样的结构:

Everything is an Object, that said you could see the structure as this:

Object

Animal

Cat

而不是这样:

Object    Animal

      Cat

Cat 扩展两者的地方，它不像最后一个例子，但 Cat 是 extends Animalextends Object.

Where Cat extends both, it's not like this last example, but it's Cat that extends Animal which extends Object.

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