如何基于Java中的接口对象获取实现类名称 [英] How can I get the implementation class name based on the interface object in Java

问题描述

我想从我的接口对象获取实现类名称-有什么方法可以做到这一点?

I want to get the implementation class name from my interface object — is there any way to do this?

我知道我可以使用instanceof来检查实现对象，但是在我的应用程序中，有将近20到30个实现相同接口的类可以重写一个特定的方法.

I know I can use instanceof to check the implementation object, but in my application there are nearly 20 to 30 classes implementing the same interface to override one particular method.

我想弄清楚它将要调用哪个特定方法.

I want to figure out which particular method it is going to call.

推荐答案

只需使用object.getClass()-它会返回用于实现接口的运行时类:

Just use object.getClass() - it will return the runtime class used implementing your interface:

public class Test {

  public interface MyInterface { }
  static class AClass implements MyInterface { }

  public static void main(String[] args) {
      MyInterface object = new AClass();
      System.out.println(object.getClass());
  }
}

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