你能强制一个java对象在运行时实现一个接口吗？

现在我的以下内容：

1）java接口。

2）具体的java 不的类实现上述接口，但确实包含与接口中定义的每个方法匹配的方法签名。

2) A concrete java class that does not implement the aforementioned interface, but does contain a method signature matching every one of the methods defined in the interface.

由于我无法更改第2项的实现，因此我想知道是否可以创建一个方法来接受第1项的实例作为参数接受第2项而没有类强制转换异常。

Since I am unable to change the implementation of item 2, I would like to know if it is possible to make a method that accepts an instance of item 1 as an argument accept item 2 without a class cast exception.

感觉就像Spring中的各种编织/强制/ AOP机制应该使这成为可能，但我不知道该怎么做。

It feels like the various weaving/coercion/AOP mechanics in Spring should make this possible, but I don't know how to do it.

有没有办法让这种情况发生？

Is there a way to make this happen?