Example That Bind Fails On Drop Table

CREATE OR REPLACE FUNCTION text_example (droptablBadWay varchar2) RETURN varchar2 AS
BEGIN
  --EXECUTE IMMEDIATE 'DROP TABLE '||droptablBadWay;--This leads to sql injection
   EXECUTE IMMEDIATE 'DROP TABLE :example_tbl' USING droptablBadWay;
EXCEPTION
  WHEN OTHERS THEN
    IF SQLCODE = -942 THEN
      DBMS_OUTPUT.put_line('the table did not exist!');
    ELSE
      RAISE;
    END IF;
END;
/

CREATE TABLE test_example_tbl
(
  oneCol varchar2(255)
);

SELECT * FROM test_example_tbl;

SELECT text_example('test_example_tbl') FROM dual;
SELECT * FROM text_example;

--clean up
DROP FUNCTION text_example;
DROP TABLE test_example_tbl;