Narrowing Type Conversion: Why is assignment of int to a byte in a declaration allowed?

Question

This may sound too trivial for an intermediate Java programmer. But during my process of reviewing Java fundamentals, found a question:

Why is narrowing conversion l

Answer 1

Because a literal number has no type.

Once you give it a type it must be casted to the other one:

int i = 13;
byte b = (byte) i;