使用Java实现多个接口 - 有一种委托方式吗？ [英] Implementing multiple interfaces with Java - is there a way to delegate?

问题描述

我需要创建一个实现多个接口的基类，例如下面的示例。

I need to create a base class that implements several interfaces with lots of methods, example below.

是否有更简单的方法来委派这些方法调用而不必创建大量重复方法？

Is there an easier way to delegate these method calls without having to create a horde of duplicate methods?

public class MultipleInterfaces implements InterFaceOne, InterFaceTwo {

    private InterFaceOne if1;
    private InterFaceTwo if2;

    public MultipleInterfaces() {
      if1 = new ImplementingClassOne();
      if2 = new ImplementingClassTwo();
    }

    @Override
    public void classOneMethodOne { if1.methodOne(); }
    @Override
    public void classOneMethodTwo { if1.methodTwo(); }
    /** Etc. */


    @Override
    public void classTwoMethodOne { if2.methodOne(); }
    @Override
    public void classTwoMethodTwo { if2.methodTwo(); }
    /** Etc. */

}

推荐答案

如上所述，没有办法。但是，有点像IDE可以自动生成委托方法。例如Eclipse可以做到。首先设置一个模板：

As said, there's no way. However, a bit decent IDE can autogenerate delegate methods. For example Eclipse can do. First setup a template:

public class MultipleInterfaces implements InterFaceOne, InterFaceTwo {
    private InterFaceOne if1;
    private InterFaceTwo if2;
}

然后右键单击，选择 Source> Generate Delegate Methods 并勾选 if1 和 if2 字段并单击确定。

then rightclick, choose Source > Generate Delegate Methods and tick the both if1 and if2 fields and click OK.

另见以下屏幕：

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