Why can I pass 1 as a short, but not the int variable i?

Question

Why does the first and second Write work but not the last? Is there a way I can allow all 3 of them and detect if it was 1, (int)1 or i passed in? And really why is one allo

Answer 1

an int literal can be implicitly converted to short. Whereas:

You cannot implicitly convert nonliteral numeric types of larger storage size to short

So, the first two work because the implicit conversion of literals is allowed.