getting a sequence value

Hi,
I have two tables where the second table has a foreign key to the first one.
When I insert a row in the first one, I need the value of the ID generated
by a sequence in the first table to insert it in the foreign key column in
the second table. Except I don't know how to do this in Java/PostgreSQL...
Anyone knows how?
Table data:
Table 1:
Field1 (integer) default: nextval('public."tblTable1_FieldID_seq"'::text)
other field...
Table 2:
Field1 (integer) default: nextval('public."tblTable2_FieldID_seq"':text)
Field2 (integer) foreign key that references to Field1 in Table 1...

So when I do this:
INSERT INTO "tblTable1"(other fields...) VALUES(...);
how do I know what to put in here?
INSERT INTO "tblTable2"("Field2", other fields...) VALUES(???, ...);

I know in MS SQL server and Oracle one uses an old and new resultset to
resolve this issue, but haven't a clue how to do this in Java/PostgreSQL...

Nico.