Retrieving a ref object from complex object table

Hai All,
I have problem retrieving a ref object. The scenario is as follows:
create type typ1 as object (c1 number, c2 varchar2(25));
create type typ2 as object (c1 number, c2 ref typ1);
create table tab1 of typ2;
I generate the java classes using the jpub. When I retrieve the values from the table using the java class, it gives me the null pointer exception.
typ1Ref r1 = typ2.getC2 ();
typ1 t1 = r1.getValue ();
System.out.println ("value: " + t1.getC1 ());
Above is the code after I have fetched the values in the result set.
Could anyone help me upon this.
Thanks in advance,
Anand

Sounds like your C2 REF TYP1 attribute may be null. Unfortunately you neglected to say where in your code the NullPointerException occurs.

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