You already posted this question in another forum. I understand that you would like to have you question answered, but posting the same question repeatedly is annoying. There are many reasons why people probably didn't answer your post the first time.
Can an Entity Bean Class be ABSTRACT in CMP?
Yes, with CMP2.0 the bean class must be abstract. You could easily find this answer yourself by looking in any book about EJB2.0. Also, the spec, which can be downloaded from java.sun.com, details the requirements for a bean.
Has anybody tried this particular example?
No, I have not. What do you want here? If you are having a problem post a description, some code and maybe a stack trace. Someone can help you with that.
Sometimes your questions are not going to get answered. It's not because people did not read your post, but because it has been answered before, can be easily answered by reading a book, or there is not enough information in the post. The people here like to answer questions, but questions like these will usually get ignored.
Thanx for the mail. It was really an eye opener ;-)
Actually I am a newbie still learning the tricks, so there will be a few mistakes on the way. But I'd definitely learn from them!