[ JPA ] 영속성 컨텍스트란?
2021-08-01 17:35:33
전체 코드 public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("hello"); EntityManager em = emf.createEntityManager(); EntityTransaction tx = em.getTransaction(); tx.begin(); try { Member member = new Member(); member.setId(101L); member.setName("HelloJPA"); em.persist(member); Member findMember = em.find(Member.class, 101L); System.out.println("..