How can this method be used on non-primitive objects?

Question

Java

Method:

public static <T extends Comparable<T>> int F(T[] anArray, T elem) {
        int count = 0;
        for (T e : anArray)
            if (e.compareTo(elem) > 0)
                ++count;
        return count;
 }

Answer 1

I will surprise you, but this method is only possible on non-primitive objects of use. Java primitives cannot parametrize generics.
The class must implement Comparable, and then objects of this class can be passed to this method.