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Warning "Method Not Exposed in Any Business Interface" is misleading. It is perfectly fine in Java EE 6 and Java EE 7 (but not in Java EE 5) to have EJB 3.1 without any business interface.
JPA entities do not have to be Serializable. In most cases they aren't. Make the warning "Entity or IdClass should implement java.io.Serializable" either Opt-In or remove it entirely.
jpa part is also related to #217398, first comment is good to move into separate report. also see #224732 last comment, I don't like to remove serializable warning completely but i shuold be configurable
(In reply to comment #2) > first comment is good to move into separate report. Just FYI, was already separated by abien. The issue was applied in ee7 projects and it's already fixed in trunk builds.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss