SQL & PL/SQL

hi all,
I am using oracle 10g.How to unload ( create command and data ) from table to file.using any command.
Is it possible to load like this:

CREATE TABLE TABLE1( COL1 NUMBER, COL2 VARCHAR(10) )
/
INSERT INTO TABLE1 VALUES (
:1,
:2)
\
$DATATYPES NUMBER, CHARACTER
1,"ASD",
2,"ASDF"

Thanks in advance.