To determine the result of the given code, let's go through each step:
- The
go() method is called from the main() method.
- Inside the
go() method, a variable s of type short is assigned a value of 7.
- The
doX(s, s) method is called with the arguments (s, s).
- Since there is no exact match for the arguments
(short, short), the compiler looks for the closest match.
- The closest match is the
doX(Number n, Number m) method, which takes two Number objects as arguments.
- The
short values s are automatically promoted to Integer objects, which are a subclass of Number.
- Therefore, the
doX(Number n, Number m) method is called.
- This method returns
4.
- The
doX(7, 7) method is called with the arguments (7, 7).
- The exact match for the arguments
(Integer, Integer) is found in the doX(Integer x, Integer y) method.
- This method returns
3.
- The result is printed as
4 3.
Therefore, the correct answer is C) 4 3.