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

When you need to perform an instanceof check.

You can't parameterize like this:

Object value;
if (value instanceof List) {
    // ...
}

So you do:

Object value;
if (value instanceof List) {
    // ...
}