🚀 go-pugleaf

I was trying to cast an Object into an sub-class when I got this
ClassCastException. The doc says that you get this exception if you "try
to cast the object into an sub-class of which it is not an instance".
But this is not true in my case. I even "watched" the object in my
JBuilder 4 before it get casted, and it has the right sub-class type. I
am doing the casting from within an EJB, and I get the object from a
serializable List passed to the EJB. Does this has to do with the
Exception I am getting? Below is the code I am using. Could someone
please point out to me what I am doing wrong? Some people said that this
is because

Thank you very much!

Lifeng

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//first get a NewEnrolleeOTW object from a List using a key
Object obj = covotw.get(KEY_REF_MEMBER_OTW);
//Then cast the object into sub-class NewEnrolleeOTW. This is where I
get the ClassCastException
NewEnrolleeOTW neotw = (NewEnrolleeOTW)obj;