@Entity public class Bar {
        @Id @GeneratedValue long id;
        List<String> Foos
    }

foo_bars (
    bar_id int,
    foo varchar(64)
);

@CollectionOfElements
@JoinTable(
        table=@Table(name="..."),
        joinColumns = @JoinColumn(name="...") // References parent
)
@Column(name="...value...", nullable=false)

setFoos(String[] foos);

setFoos(myList.toArray(new String[myList.size()]));

@Entity
public class Bar {
    @Id @GeneratedValue long id;

    @OneToMany(mappedBy="bar")   //"bar" = field name in mapping class
    List<FooBar> Foos;
}

@Entity
public class FooBar {
    @Id @GeneratedValue long id;

    @ManyToOne
    @JoinColumn(name="bar_Id")
    Bar bar;
}