I have 2 tables table A
with ID and name table B with ID and name

i want to insert data in 3rd table which will contain ID from both the tables
i.e tableC will have 2 columns : IDtableA IDTableB


In The mapping class of table A i am doing something like this
@OneToOne
@JoinTable(name = "TableA_X_TableB",
joinColumns ={@JoinColumn(name = "TableBId")})
public B getB() {
return b;
}
public void setB(B b)
{
this.b= b;
}

when i call from the code

A a = new A();
B b = new B();
service.persist(b);
a.setB(b);
service.persist(a);

I can see data in TableA , TableB but its not there in TableA_X_TableB which joins these two tables.
Has anyone seen this before , i have no clue why its happening.

Any help in this will be appriciated.

Thanks,