继承中的对象关系

本文介绍了继承中的对象关系的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个A类.假设B类扩展了A. 当我创建B的实例时..创建两个对象，一个为A，另一个为B .....这两个对象如何关联，指定此A对象仅与该B对象相关....

i am having a class A .suppose the class B extends A . when i am creating the instance of B ..two objects are created one for A and other for B.......how this two objects are related specifying this A object is related to only this B object....

class A{} class B extends A{ public static void main(String[] args){ B b = new B(); } }

在这里，为超类A和子类B创建了两个对象... 与此B相关的特定A对象的方式.......

here two objects are created one for the super class A and for the subclass B... how the specific A object related to this b.......

推荐答案

都调用了两个构造函数，但是仅创建了一个对象，并且该对象的类型B.阅读OOP的基础知识. Both constructors are called, but only one object is being created and that is of type B. Read the fundamentals of OOP.

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