JSF is an MVC architecture. Thus, the Model, the View, and the Controller are 3 separate entities, each with its own specific purpose. For the most part this means that logic has no place in the View. The exception being mostly simple EL used in "rendered" attributes.
Even where you can use scriptlets in JSF, it's bad design. It's not even very good design in JSP - I've been helping someone out who can make hardly any sense of his project because half the program logic or more is in JSPs polluting the HTML instead of being in Java classes.
An IDE is no substitute for an Intelligent Developer.