java - 如果强制转换为其实现的接口，则获取原始类

Question

假设一个类如下

interface Dummy{
}

class Funny implements Dummy {
}

现在我想找到一种方法来检索一个有趣的对象的类，即使它被强制转换为Dummy

Answer 1

实现了这件作品，

Funny fun = new Funny();
Dummy dum = fun;
Object obj = fun;
Class cdum = dum.getClass();
Class cobj = obj.getClass();
System.out.println(cdum.getName());
System.out.println(cobj.getName());
dum = (Dummy) dum;
obj = (Object) fun;
cdum = dum.getClass();
cobj = obj.getClass();
System.out.println(cdum.getName());
System.out.println(cobj.getName());

接收输出为

Funny
Funny
Funny
Funny