This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I am reading about annotations, and I can't figure out the difference between EJB3 annotations, Hibernate annotations and JDK5 annotations. All three have the same tags: @Id, @one-to-many etc Can anyone explain to me, or is there a good tutorial about annotations ?
I don't recall a JDK 5 Annotation @Id. But that doesn't matter Annotations are actually still class, and classes that can have the same name, but in different packages.
So there could be an @Id that is in a JDK package and one in the JPA package and even a seperate one in Hibernate. But the Hibernate and JPA annotations should be one and the same and in the same package, because Hibernate implements the JPA Specification. Just to claify I am using the JPA name instead of EJB3, because those EJB3 annotations you mentioned are part of the JPA spec which is included under EJB3.