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An interview question.Java interface

An interview question.Java interface# Java - 爪哇娇娃

S*t2008-09-15 07:09

1 楼

【以下文字转载自 JobHunting 讨论区】
发信人: Serverlet (M$), 信区: JobHunting
标题: An interview question.Java interface
发信站: BBS 未名空间站 (Mon Sep 15 11:24:10 2008), 站内
why java use interface while c++ keeps multiple inheritance?

g*g2008-09-15 07:09

2 楼

Because C++ is a mess and Java learns lesson out of it.

【在 S*******t 的大作中提到】

: 【以下文字转载自 JobHunting 讨论区】
: 发信人: Serverlet (M$), 信区: JobHunting
: 标题: An interview question.Java interface
: 发信站: BBS 未名空间站 (Mon Sep 15 11:24:10 2008), 站内
: why java use interface while c++ keeps multiple inheritance?

S*t2008-09-15 07:09

3 楼

maybe I should ask this question on C++ board...

【在 g*****g 的大作中提到】

: Because C++ is a mess and Java learns lesson out of it.

S*t2008-09-15 07:09

4 楼

but you interviewed for a java position.
remember that.

【在 S*******t 的大作中提到】

: maybe I should ask this question on C++ board...

F*n2008-09-15 07:09

5 楼

这个问题问得真弱智

【在 S*******t 的大作中提到】

: maybe I should ask this question on C++ board...

A*o2008-09-15 07:09

6 楼

it's an easy question.

【在 F****n 的大作中提到】

: 这个问题问得真弱智

s*e2008-09-15 07:09

7 楼

just say whatever you know about interface, such as: interface is a keyword
and first-class member in Java; Program to interface not to class; Prefer
interface inheritance to implementation inheritance. In short, interface is
a much better solution than multiple inheritance, Java learned the lesson.

【在 S*******t 的大作中提到】

: maybe I should ask this question on C++ board...

S*t2008-09-15 07:09

8 楼

the keypoint is: multi-inheritance cause a lot of problems.

keyword
is

【在 s***e 的大作中提到】

: just say whatever you know about interface, such as: interface is a keyword
: and first-class member in Java; Program to interface not to class; Prefer
: interface inheritance to implementation inheritance. In short, interface is
: a much better solution than multiple inheritance, Java learned the lesson.

s*e2008-09-15 07:09

9 楼

well, the keypoint is you will be asked to give detailed explanation. I am
talking about how you could answer this question in an interview. now you
are in the position to explain what the problems are.

【在 S*********t 的大作中提到】

: the keypoint is: multi-inheritance cause a lot of problems.
:
: keyword
: is

F*n2008-09-15 07:09

10 楼

问得莫名其妙，“用”INTERFACE”和多继承一定矛盾吗，C++难道不用接口？

【在 A**o 的大作中提到】

: it's an easy question.

g*g2008-09-15 07:09

11 楼

C++是没有接口这个概念，虽然你可以定义一个只有虚函数的母类。
另外很重要的是C++不是同根继承(所有java类继承Object类)，
这也使得实现上产生困难。

【在 F****n 的大作中提到】

: 问得莫名其妙，“用”INTERFACE”和多继承一定矛盾吗，C++难道不用接口？