What this means is, at runtime, java cannot convert from class Object to class Items. What I would do, is use the constructor in the Items class to accept your string value and use that to create your Items object.
String itemString = itemToUse.nextLine();
Items item = new Items(itemString);
This would avoid the nasty type casting and in my opinion provide cleaner code. I don't know how practical this is for you, as I don't know what your Items class looks like.
Greetings.
Marcus