posted 15 years ago
From top of my head I remember at least three.
1) some references to the life cycle callbacks list pre-construct and post-destroy as callback methods instead of post-construct and pre-destroy
2) listener binding method examples have missing method element and lists directly his children instead (method-name,...)
3) JPA spec. states that composite primary key class must be serializable however at least one example shows implementation of PK class that is not Serializable. (JPA spec 9.1.33)