IllegalArgumentException:对象不是声明类的实例

“foo”异常怎么可能是 不 抛出,但后续调用invoke()会抛出以下异常?

if (method.getDeclaringClass() != object.getClass())
    throw new RuntimeException("foo");

method.invoke(object);

抛出异常:

java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)