public class FillData {
/**
* A method to fill arbitrary data into the database
*/
public static void Fill() {
List<Person> list = Arrays.asList(new Person("A", 20), new Person("B", 30), new Person("C", 40));
EntityManager em = ManageHuman.get();
em.getTransaction().begin();
for (Person p : list) {
em.persist(p);
}