构造函数在Java中返回什么？ [英] What does a constructor return in Java?

问题描述

在关于这个主题的帖子后，我发现自己有点困惑。
所以我再次问这个：

After going on the post on this topic I found myself little confused. So again I am asking this:

Java构造函数是否返回任何值？

"Does Java constructor returns any value?"

我的书说它们不能返回值，但是我的教授说他们可以并且他们总是这样做。

My books say they can't return a value, but my professor says they can and they are always doing so.

由于控件需要转移给某些有价值的人无效吗？

As the control needs to be transferred to someone with some value either void?

推荐答案

这有点令人困惑：构造函数确实没有返回值;它是运营商 new 。但是，构造函数总是与 new ^* 一起使用，因此看起来总是返回一个值。

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^* 这是一个小小的简化：你可以使用没有 new 的构造函数反射。但是，相同的机制将起作用。

This is a little confusing: constructors indeed do not return a value; it is operator new that does. However, constructors are always used with a new^*, so it looks like they always return a value.

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^* This is a slight simplification: you can use a constructor without new if you go through reflection. However, the same mechanisms will be in play.

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