import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Parent{
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    public Long getId() {
        return id;
    }

    public void setId(final Long id) {
        this.id = id;
    }
}

import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;

@Entity
public class Child {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    @ManyToOne(fetch = FetchType.LAZY)
    private Parent parent;

    public Long getId() {
        return id;
    }

    public void setId(final Long id) {
        this.id = id;
    }

    public Parent getParent() {
        return parent;
    }

    public void setParent(final Parent parent) {
        this.parent = parent;
    }
}

import junit.framework.TestCase;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hsqldb.jdbcDriver;

public class LazyLoadingWithFieldLevelAnnotationsTest extends TestCase {
    SessionFactory sessionFactory;

    public Session getSession() throws HibernateException {
        return sessionFactory.openSession();
    }

    @Override
    protected void setUp() throws Exception {
        // load the hsqldb jdbc driver
        Class.forName(jdbcDriver.class.getName());

        // setup session-factory
        sessionFactory = new AnnotationConfiguration().addAnnotatedClass(Child.class).addAnnotatedClass(Parent.class).setProperty("hibernate.dialect",
                "org.hibernate.dialect.HSQLDialect").setProperty("hibernate.connection.url", "jdbc:hsqldb:mem:temptest").setProperty("hibernate.hbm2ddl.auto", "create-drop")
                .buildSessionFactory();
    }

    public void testLazyLoadingWithFieldLevelAnnotations() throws Exception {
        Session session = getSession();
        session.beginTransaction();
        // save a parent and a child, connected to that parent

        final Parent p = new Parent();
        session.save(p);

        Child c = new Child();
        c.setParent(p);
        session.save(c);

        assertNotNull(c.getId());

        // close the session and open a new one
        session.getTransaction().commit();
        session.close();
        session = getSession();

        // get the child from the database
        c = (Child) session.get(Child.class, c.getId());

        assertNotNull(c);
        assertNotNull(c.getParent());

        // assert that the parent is currently not initialized
        assertFalse(Hibernate.isInitialized(c.getParent()));
        assertNotNull(c.getParent().getId());

        // assert that the parent still is not initialized
        assertFalse(Hibernate.isInitialized(c.getParent()));
    }
}

junit.framework.AssertionFailedError
   at junit.framework.Assert.fail(Assert.java:47)
   at junit.framework.Assert.assertTrue(Assert.java:20)
   at junit.framework.Assert.assertFalse(Assert.java:34)
   at junit.framework.Assert.assertFalse(Assert.java:41)
   at LazyLoadingWithFieldLevelAnnotationsTest.testLazyLoadingWithFieldLevelAnnotations(LazyLoadingWithFieldLevelAnnotationsTest.java:58)

(...)

(...)
57:        // assert that the parent still is not initialized
58:        assertFalse(Hibernate.isInitialized(c.getParent()));
59:    }
(...)