gistfile1.java

@Entity
@Table(name = "ACTIVITY")
@Audited
public class Activity implements Serializable {
    @Id
    @Column(name = "Id")
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    @ManyToOne
    @JoinTable( 
            name="ACTIVITYPROFILE_ACTIVITY",
            joinColumns = @JoinColumn(name="ACTIVITY_ID", referencedColumnName="ID"),
            inverseJoinColumns = @JoinColumn(name="ACTIVITYPROFILE_ID", referencedColumnName="ID")
    )
    private ActivityProfile activityProfile;

    ...
}

@Entity
@Table(name = "ACTIVITYPROFILE") 
public class ActivityProfile {
    @Id
    @Column(name = "ActivityProfileId")
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @OneToMany(mappedBy="activityProfile", cascade = { CascadeType.ALL })	
    private List<Activity> activities;

    ...
}