Check table exist or not before create it in Oracle

Question

Trying to check is table exist before create in Oracle. Search for most of the post from Stackoverflow and others too. Find some query but it didn\'t work for me.

Answer 1

declare n number(10);

begin
   select count(*) into n from tab where tname='TEST';

   if (n = 0) then 
      execute immediate 
      'create table TEST ( ID NUMBER(3), NAME VARCHAR2 (30) NOT NULL)';
   end if;
end;