多个接口以Java扩展 [英] Multiple Interfaces extending in Java

问题描述

我需要在Java中实现具有多个接口继承的Facade设计模式，或者是具有Bridge设计模式的正确Facade。我知道这是可能的，因为我把它作为一个系统的一部分看到了，但我不记得实现得很好。

这是我到目前为止的实现：

I need to implement a Facade design pattern with multiple inheritance of interfaces in Java or to be correct Facade with Bridge design pattern. I know this is possible because I saw it in as a part of one system, but I don't remember the implementation very well.
Here is my implementation so far:

public interface IOne {
public void methodOneIOne();
public void methodTwoIOne();
}

及其实施：

public class One implements IOne {
@Override
public void methodOneIOne() {
    System.out.println("methodOneIOne()");
}
@Override
public void methodTwoIOne() {
    System.out.println("methodTwoIOne()");
}  }


public interface ITwo {
public void methodOneITwo();
public void methodTwoITwo();
}
public class Two implements ITwo {
@Override
public void methodOneITwo() {
    System.out.println("methodOneITwo()");
}
@Override
public void methodTwoITwo() {
    System.out.println("methodTwoITwo()");
}}

门面：

public interface IFacade extends IOne, ITwo {}

所以，从这里我不知道去哪里。如果我创建一个实现IFacade的类，那么它将需要实现所有方法，这不是我想要的。

So, from here I don't know where to go. If I create a class that implements IFacade, then it will be required to implement all of the methods, and this isn't what I want.

推荐答案

你真正试图用门面课做什么？如果你只是试图通过大多数方法，可能修改一些，然后动态代理可能就是您想要的。

What are you actually trying to do with your facade class? If you are just trying to pass through most methods, possibly modifying a few then a dynamic proxy might be what you want.

否则你实际上必须实现 IFacade 的所有方法，因为Java不允许你使用多个继承，所以你不能扩展一个和两个。

Otherwise you would in fact have to implement all methods of IFacade, as Java does not allow you to use multiple inheritance, so you could not extend both One and Two.

这篇关于多个接口以Java扩展的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！