Varrays/Nested tables/temp tables

Question

Within my PL/SQL code, which I eventually will turn into stored procedure, I want to use Varrays, or Nested tables, or temp tables, whatever is the most suitable.
Right now I am using dbms_output.put_line() just to display list of 1 column values. Further, I need to use this list in Where ... In (my list ) of other query.
Prior to Oracle, I worked with SQL Server and I have always used temp table in such situations. But in Oracle it does not seem like good solution.
Could please someone explain me what object should I use in this situation, and what's more important, code examples how to assign values to it, and how to apply Select against this object.
Thanks.

Answer 1

create or replace type ttab_object_type is table of varchar2(18);
show errors
declare
type ttab_object_name is table of user_objects.object_name%type index by binary_integer;
tab_object_name ttab_object_name;
tab_object_type ttab_object_type;
begin
tab_object_type := ttab_object_type('TABLE', 'INDEX');
select object_name
bulk collect into tab_object_name
from user_objects
where object_type in (select * from table(tab_object_type));
for i in 1.. tab_object_name.count loop
dbms_output.put_line(tab_object_name(i));
end loop;
end;
Richard