扩展多个类 [英] Extending multiple classes

问题描述

我知道Java不支持多重继承，因为不允许扩展多个类。我只是想知道我的问题是否有解决方法。

I know Java doesn't support multiple inheritance by not allowing to extend more than one class. I just want to know if there is a workaround for my issue.

我有一个名为 CustomAction 的类需要扩展两个抽象类， BaseAction 和 QuoteBaseAction 。我不能改变任何这些抽象类，并将其他类扩展。

I've a class named CustomAction which needs to extend two abstract classes, BaseAction and QuoteBaseAction. I can't change any of these abstract classes and make one extend other.

这些抽象类有我需要使用的方法实现。我也无法创建界面，因为界面只能扩展另一个界面。

These abstract classes have method implementations which I need to make use of. I can't create an interface also since an interface can extend only another interface.

任何想法？

推荐答案

这里你去...

public class CustomAction extends BaseAction {
  class Inner extends QuoteBaseAction {

  }
}

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