i am using Jdev 184.108.40.206.0.
i have a requirement to call plsql procedure or function from my backing bean java file and get back the returned value from the procedure or function.
what piece of simple code i need to write in my backing bean?
As always you write the method to call he pl/sql in the application module, expose this method to the client (so you see it in the datacontroll) then create a operation binding to the method and call this operation from the bean. The result you get by operation.getResult();
You should never call pl/sql from the bean directly!
The doc shows how to call the procedure from an application module: http://docs.oracle.com/cd/E21764_01/web.1111/b31974/bcadvgen.htm#sm0297