@PersistenceContext private EntityManager entityManager; public void updateUserProfile(Long usrId) { User usr = entityManager.find(User.class,usrId); // Line 1 usr.setName("JavaChamp"); // Line 2 entityManager.merge(usr); // Line 3 entityManager.persist(usr); // Line 4 }
private EntityManager entityManager;
public void updateUserProfile(Long usrId) {
User usr = entityManager.find(User.class,usrId); // Line 1
usr.setName("JavaChamp"); // Line 2
entityManager.merge(usr); // Line 3
entityManager.persist(usr); // Line 4
}
Java Persistence API
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