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13.13.13.13.13.13.13.13.13.13.13.13.import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; import org.junit.BeforeClass; import org.junit.Test; public class ManyToManyTest { @BeforeClass public static void setUpBeforeClass() throws Exception { } @Test public void save() { EntityManagerFactory factory = Persistence.createEntityManagerFactory("forthefuture"); EntityManager em = factory.createEntityManager(); em.getTransaction().begin(); Student student = new Student(); student.setName("Michael"); Teacher teacher = new Teacher(); teacher.setName("Tony"); student.getTeachers().add(teacher); em.persist(student); em.getTransaction().commit(); em.close(); factory.close(); } }Teacher teacher = em.find(Teacher.Class, 1);Teacher teacher = em.find(Teacher.Class, 1);