Consider a simple POJO class, like the one shown below:

Class Person{   long id;   String firstName;   String lastName;   ...}

Now, suppose you want to persist a collection of Person objects. You can do it using the following code:

EntityManagerFactory factory =    Persistence.createEntityManagerFactory("testSample");OpenJPAEntityManager em = (OpenJPAEntityManager)    factory.createEntityManager();em.getTransaction().begin();List perList = new ArrayList();perList.add(new Person(1,"firstname1","lastname1"));perList.add(new Person(1,"firstname1","lastname1"));em.persistAll(perList );em.getTransaction().commit();em.close();factory.close();