循环继承和接口——A类不能实现B类接口而B类实现A接口 [英] Cyclic inheritance and interfaces - class A can't implement class B interface while class B implements A interface

问题描述

我有:

public class A implements BListener {
    public interface AListener {}
}

public class B implements AListener {
    public interface BListener {}
}

所以，如果我理解正确，循环继承的发生是因为:

So, if I understand correctly the cyclic inheritance happens because:

编译器去A并说嘿，A实现了BListener，我们去找BListener吧！"

然后当它试图找到 BListener 时，它最终找到了 B，它说:

Then when it tries to find BListener, it eventually gets to B, which it says:

嘿，BListener，A 需要的在 B 里面！但是等等！B 需要 AListener！我们去找 AListener！"

然后它到达 A，重复.我做对了吗?

And then it gets to A, repeat. Did I get this right?

顺便说一句，这个编译错误发生在我在Android开发上.

By the way, this compilation error happened to me on Android development.

推荐答案

画出来可能会有所帮助.

It may help to draw it out.

              >A 
is part of  /         inherits
                   V             
   AListener        BListener
           ^
  inherits       /    is part of 
               B<

一个可爱的圆圈.如果其他人已经存在，您将无法创建其中之一.

A lovely circle. You can't create one of them without the others already existing.

编译器是否是一只患有多动症的松鼠，它喝咖啡追逐自己的尾巴?

Is the compiler a squirrel with ADHD high on coffee chasing it's own tail?

不，因为松鼠不会停止(直到咖啡因用完).编译器寻找这个然后放弃.

Nope because a the squirrel would not stop (until the caffeine ran out). The compiler looks for this and then gives up.

注意:Eclipse 有一个允许此设置的错误.

Note: Eclipse has a bug which allows this setup.

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