as poornerd suggested - you need to create models first with proper fields, then create and object, pseudo code :
MyModel obj = new MyModel();
obj.codefile = 7555;
obj.adt = "Ebean";
obj.ad = 0;
obj.tag = 0;
obj.save()
(of course you can create proper constructors
in model(s) as well to shortcut it to:
MyModel obj = new MyModel(7555, "Ebean", 0, 0);
obj.save()
Take a closer look to models of computer-database sample app
Note.: sample you found SqlUpdate down=Ebean.createSqlUpdate...
was a demo where it was required to perform 'manual' query, but for common use cases you should go with common Ebean approach...