SQL & PL/SQL :: Check If Object Exist Or Not While Creating Procedure?

I have to create a stored procedure having some 10 cursors and i have to display the data's fetched by select statement in cursors using dbms_output.put_line().

for ex:
-------
CREATE OR REPLACE PROCEDURE PROC AS
CURSOR C1 AS SELECT * FROM EMP;
BEGIN
FOR R IN C1
LOOP

[code].....

My question is while creating procedure i want to check if the object exist in database or not.

If EXIST
NO PROBLEM MY CODE CREATE THE PROC AND EXECUTED FINE
IF NOT EXIST

I don't want an exception to be thrown stating "OBJECT DOES NOT EXIST" I wanted PL/SQL engine not to execute the particular select statement itself and continue executing other select statements.

The reason why have such kind of wierd requirement is my program displays all the CEMLI objects in any 11.5.10 instance. I don't know whether they have installed discoverer or not. if they installed it no problem else my program have to eliminate.EXECUTE IMMEDIATE, REF CURSOR becoz i tried it and works fine.but not able to wrap in WRAPPER UTILITY 8.0 versions.