What is the use and point of unbound wildcards generics in Java?

Question

I don\'t understand what is the use of unbound wildcards generics. Bound wildcards generics with upper boundary makes perfect sense, be

Answer 1

While using raw types means that you don't know about generics (because you're lazy or code was written ages ago), using means that you know about generics and explicitly emphasize that your code can work with any kind of objects.