What's the difference between JPA and Hibernate? [closed]

Answer 1

JPA is the dance, Hibernate is the dancer.

Answer 2

JPA : is just like an interface and have no concrete implementation of it to use functions which are there in JPA.

Hibernate : is just a JPA Provider which have the implementation of the functions in JPA and can have some extra functions which might not be there in JPA.

TIP : you can use

     *combo 1* : JPA + JPA Provider(Hibernate) 
     *combo 2* : only Hiberante which does not need any interface 

Combo 1 : is used when you feel that your hibernate is not giving better performance and want to change JPA Provider that time you don't have to write your JPA once again. You can write another JPA Provider ... and can change as many times you can.

Combo 2 : is used very less as when you are not going change your JPA Provider at any cost.

Visit http://blog-tothought.rhcloud.com//post/2, where your complete confusion will get clear.

Answer 3

JPA is just a specification while Hibernate is one of the JPA provider i.e hibernate is implementing various things mentioned in JPA contract.

Answer 4

JPA is Java Persistence API. Which Specifies only the specifications for APIs. Means that the set of rules and guidelines for creating the APIs. If says another context, It is set of standards which provides the wrapper for creating those APIs , can be use for accessing entity object from database. JPA is provided by oracle.When we are going to do database access , we definitely needs its implementation. Means JPA specifies only guidelines for implementing APIs. Hibernate is a JPA provider/Vendor who responsible for implementing that APIs. Like Hibernate TopLink and Open JPA is some of examples of JPA API providers. So we uses JPA specified standard APIs through hibernate.

Answer 5

JPA is a specification to standardize ORM-APIs. Hibernate is a vendor of a JPA implementation. So if you use JPA with hibernate, you can use the standard JPA API, hibernate will be under the hood, offering some more non standard functions. See http://docs.jboss.org/hibernate/stable/entitymanager/reference/en/html_single/ and http://docs.jboss.org/hibernate/stable/annotations/reference/en/html_single/

Answer 6

JPA is just a specification.In market there are many vendors which implements JPA. Different types of vendors implement JPA in different way. so different types of vendors provide different functionality so choose proper vendor based on your requirements.

If you are using Hibernate or any other vendors instead of JPA than you can not easily move to hibernate to EclipseLink or OpenJPA to Hibernate.But If you using JPA than you just have to change provide in persistence XML file.So migration is easily possible in JPA.