Outputting data in an Oracle Collection

Question

I would like some advice on the easiest way to output the data in my collection given the code I have below. An example would be GREATLY appreciated.
DECLARE
TYPE refresh_file_t IS TABLE OF test.loading_dock%ROWTYPE ;
demo refresh_file_t ;
BEGIN
SELECT * BULK COLLECT INTO demo FROM test.loading_dock ;
END ;

Answer 1

Here is what I'm trying to do. I assign my data to my collection. Then I try to loop through the collection and use put_line to view it.
For simplicity reasons, I am limiting my data to only one record. Here is my code and my error below...thanks for your help!
CODE
DECLARE
TYPE refresh_file_t IS TABLE OF test.refresh_loading_dock%ROWTYPE ;
demographic refresh_file_t ;
v_count INTEGER ;
BEGIN
SELECT * BULK COLLECT
INTO demographic
FROM test.refresh_loading_dock
WHERE ROWNUM = 1 ;
v_count := demographic.FIRST ;
WHILE (v_count IS NOT NULL)
LOOP
dbms_output.put_line(demographic(v_count)) ;
v_count := demographic.NEXT(v_count) ;
END LOOP ;
END ;
ERROR
ORA-06550: line 14, column 9:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 14, column 9:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action: